English words: ultrabullet chess to ultramicroanalysis

300 English words, part 4 of 88 of the words starting with U, A to Z. 9 have a page of their own.

English words ultrabullet chess to ultramicroanalysis

ultrabullet chess noun: Alternative form of ultrabullet.
ultracain noun: Synonym of articaine.
ultracapable adjective: Highly capable.
ultracapacitor noun: A supercapacitor.
ultracapitalism noun /ˌʌltɹəˈkæpɪtəlɪzəm/: Extreme capitalism; an economic or social system characterized by unrestrained, extreme, or hyper-competitive capitalist practices.
ultracapitalist adjective, noun /ˌʌltɹəˈkæpɪtəlɪst/: Extremely capitalist; exhibiting, pertaining to, or characterized by extreme capitalism.
ultracarbonaceous adjective: Extremely rich in carbon or carbon compounds.
ultracareful adjective: Extremely careful.
ultracasual adjective: Extremely casual.
ultracataclasite noun: A type of cataclasite characterized by a matrix occupying greater than 90% of the total volume.
ultracautious adjective: Extremely cautious
ultracellular adjective: Describing ultramicroscopic cellular features
ultracentenarian noun /ˌʌl.tɹəˌsɛn.təˈnɛəɹi.ən/: A person who is over a hundred years old
ultracentenarianism noun: The condition of a person being over a hundred years old.
ultracentralism noun /ˌʌltɹəˈsɛntɹəlɪzəm/: Excessive centralisation or centralism.
ultracentrifugal adjective: Relating to ultracentrifugation.
ultracentrifugally adverb: By means of an ultracentrifuge
ultracentrifugate verb: To separate by means of an ultracentrifuge.
ultracentrifugation noun: Centrifugation in an ultracentrifuge.
ultracentrifuge noun, verb: A high-speed centrifuge, especially one free from convection that is used to separate colloidal particles.
ultracentrifuged adjective: Prepared or separated using an ultracentrifuge
ultraceremonious adjective: extremely ceremonious
ultracharismatic adjective: Extremely charismatic.
ultracharming adjective: Very charming; delightful.
ultracheap adjective: Extremely cheap
ultrachic adjective: Very stylish or elegant.
ultracivil adjective: extremely civil
ultracivilized adjective: Extremely civilized.
ultraclean adjective: Exceptionally clean.
ultraclear adjective: Very clear
ultraclever adjective: Extremely clever.
ultraclose adjective: Extremely close.
ultracognitive adjective: Taking a highly cognitive approach.
ultracold adjective: Of a temperature close to absolute zero, especially one at which quantum-mechanical properties are observed.
ultracolossal adjective /ˌʌltɹəkəˈlɒsəl/: Exceedingly colossal; of utmost colossalness.
ultracomfy adjective: Very comfortable.
ultracommercial adjective: Extremely commercial or commercialized.
ultracompact adjective: Extremely compact; of utmost compactness.
ultracompetent adjective: Very highly competent.
ultracompetitive adjective: Extremely competitive
ultracompetitiveness noun: The quality of being ultracompetitive.
ultracomplex adjective: Very complex
ultracomplexity noun: The condition of being ultracomplex
ultracompressed adjective: Extremely compressed.
ultraconcentrated adjective: Extremely concentrated; of utmost concentration.
ultraconcentration noun: Extraordinary concentration; hyperconcentration.
ultracondensation noun: extreme condensation, typically of mitochondria
ultracondensed adjective: Extremely condensed.
ultracondenser noun: The optical condenser of an ultramicroscope
ultraconfident adjective: extremely confident
ultraconformism noun: Extreme conformism.
ultraconformist noun: An extreme conformist.
ultracongruent adjective: Very similar in form (to something else)
ultraconscientious adjective: Extremely conscientious.
ultraconservation noun: Extreme conservation (of genes)
ultraconservatism noun: ultraconservative beliefs
ultraconservative adjective, noun: Extremely conservative, especially in politics.
ultraconserved adjective: Highly conserved
ultraconstitutional adjective: Extremely constitutional.
ultracontemporary adjective: Thoroughly modern and up to date.
ultracontig noun: An ordered and oriented set of supercontigs obtained by use of supporting evidence
ultracontractivity noun: The property of being ultracontractive.
ultracontroversial adjective: Highly controversial.
ultraconvenience noun: The quality of being extremely convenient.
ultraconvenient adjective: Extremely convenient.
ultracool adjective: extremely cool
ultracooled adjective: Cooled to a very low temperature.
ultracordial adjective: extremely cordial
ultracosmic adjective /ˈʌltɹəˈkɒz.mɪk/: Above and beyond the cosmos; supercosmic.
ultracosmopolitan adjective: extremely cosmopolitan
ultracredulous adjective: extremely credulous
ultracrepidarianism noun: The habit or act of giving opinions on matters outside the scope of one's knowledge, knowledgeability, or expertise.
ultracrepidate verb: to venture beyond one's competence or purview
ultracrisp adjective: Extremely crisp
ultracrispy adjective: Extremely crispy; of utmost crispiness.
ultracritical adjective: Synonym of hypercritical.
ultracryomicrotome noun: A cryoscopic ultramicrotome
ultracryomicrotomy noun: microtomy by means of an ultracryomicrotome
ultracryotome noun: An ultramicrotome designed to work at low temperatures
ultracryotomy noun: The use of an ultramicrotome in the preparation of very thin, frozen samples of biological tissue
ultracytochemical adjective: Relating to ultracytochemistry.
ultracytochemically adverb: In an ultracytochemical manner.
ultradangerous adjective: Extremely dangerous.
ultradarwinism noun: Alternative form of ultra-Darwinism.
ultradarwinist noun: Alternative form of ultra-Darwinist.
ultradeep adjective: Very deep; of utmost deepness; superdeep.
ultradeformable adjective: Very highly deformable.
ultradelicate adjective: Extremely delicate.
ultradeluxe adjective: Extraordinarily deluxe; of the utmost quality or luxuriousness.
ultrademocratic adjective: Extremely democratic.
ultradense adjective: Extremely dense; of utmost density.
ultradepleted adjective: extensively depleted of certain chemical elements.
ultradesirable adjective: Highly desirable.
ultradespotic adjective: Extremely despotic.
ultradestructive adjective: Exceedingly destructive; of utmost destructiveness.
ultradetailed adjective: Having a very high level of detail.
ultradiafiltration noun: ultrafiltration or diafiltration (used, more or less, synonymously)
ultradian adjective: Cyclical with a periodicity significantly shorter than 24 hours, that is, more frequent than circadian.
ultradifferentiability noun: The condition of being ultradifferentiable
ultradifferentiable adjective: Having all derivatives over an open set bounded by an indexed value in an ultradistribution (times a constant).
ultradifferential adjective: A generalization of a differential that is calculated over an ultradistribution.
ultradiffuse adjective: Extremely diffuse.
ultradignified adjective: Extremely dignified.
ultradimensional adjective: Hyperdimensional.
ultradisciplined adjective: extremely disciplined
ultradiscreet adjective: Very discreet.
ultradiscrete adjective: Describing any discrete system whose dependent variables also take discrete values
ultradiscretization noun: The transformation of a discrete system into an ultradiscrete one
ultradiscretize verb: To transform by ultradiscretization.
ultradispensationalism noun: A form of dispensationalism which states that the church began at the end of Acts.
ultradispensationalist noun: A proponent of ultradispensationalism.
ultradispersed adjective: Highly dispersed
ultradistal adjective: Extremely distal
ultradistance noun: A very great distance.
ultradistant adjective: Extremely distant.
ultradistinct adjective: Extremely distinct
ultradistribution noun: A continuous linear functional.
ultradiverse adjective: Very highly diverse.
ultradogmatic adjective: extremely dogmatic
ultradolichocephalic adjective: Highly dolichocephalic.
ultradolichocephaly noun: The condition of being ultradolichocephalic.
ultradolichocranial adjective: Having an extremely long skull.
ultradrastic adjective: Extremely drastic.
ultradrive noun: A spaceship drive capable of travelling faster than the speed of light.
ultradry adjective: extremely dry.
ultradurable adjective: Extremely durable.
ultraearly adjective: Very early
ultraefficient adjective: Extremely efficient; of utmost efficiency.
ultraelegant adjective: Extremely elegant
ultraeligible adjective: Extremely eligible for marriage.
ultraelliptic adjective: Being or relating to a kind of hyperelliptic line integral involving a polynomial of degree 5 or 6.
ultraempirical adjective: Highly empirical: empirical to a high degree.
ultraendurance adjective: Involving sustained or consistent activity for a very long time.
ultraenergetic adjective: Extremely energetic.
ultraenthusiasm noun: Extreme enthusiasm.
ultraenthusiastic adjective: extremely enthusiastic
ultraevangelical adjective: extremely evangelical
ultraexcessive adjective /ˈʌltɹəɪkˈsɛsɪv/: Extremely excessive.
ultraexclusive adjective: Particularly exclusive.
ultraexpensive adjective: Extremely expensive.
ultraextensive adjective: extremely extensive
ultrafabulous adjective: Wholly fabulous; wonderful.
ultrafaint adjective: Very faint
ultrafamiliar adjective: extremely familiar; particularly familiar
ultrafamous adjective: Particularly famous.
ultrafanatic adjective, noun: Extremely fanatic.
ultrafanatical adjective: Extremely fanatical.
ultrafantastic adjective: Extremely fantastic.
ultrafashionable adjective: Extremely fashionable.
ultrafast adjective: Very fast, or of very short duration; especially concerning events that take place in femtosecond or picosecond timescales.
ultrafastidious adjective: Extremely fastidious.
ultrafat adjective: Extremely fat or overweight.
ultrafederalism noun: Very strong federalist beliefs.
ultrafederalist adjective, noun: Having very strong federalist beliefs.
ultrafeminine adjective: Highly feminine.
ultrafemme noun: A very feminine person.
ultrafeudal adjective: Extremely feudal.
ultrafiche noun: An ultramicrofiche.
ultrafidian adjective: Going beyond mere faith
ultrafidianism noun: The quality of being ultrafidian.
ultrafilter noun, verb: A device that performs ultrafiltration.
ultrafilterability noun: The quality or degree of being ultrafilterable.
ultrafilterable adjective: Able to undergo ultrafiltration.
ultrafiltered adjective: filtered using ultrafiltration
ultrafiltrate noun, verb: The filtrate produced by ultrafiltration
ultrafiltration noun: Filtration through a semipermeable membrane that only allows small molecules through.
ultrafine adjective: Of particles, very fine.
ultrafine particle noun: A particle with diameter less than about 100 nanometers (nm).
ultrafinely adverb: In an ultrafine manner
ultrafinitism noun: A form of finitism that is even more extreme in that it denies those constructs whose construction cannot be physically performed (such as a number that no...
ultrafinitist adjective, noun: A proponent of ultrafinitism.
ultraflat adjective: Extremely flat
ultraflexibility noun: The quality of being ultraflexible.
ultraflexible adjective: Extremely flexible.
ultraformal adjective: extremely formal
ultrafractionation noun: fractionation by means of an ultracentrifuge
ultrafragile adjective: Extremely fragile.
ultrafreezer noun: A freezer that operates at a very low temperature
ultrafrivolous adjective: extremely frivolous
ultrafunction noun: A type of generalized non-Archimedean function
ultrafunctional adjective: Extremely and rigidly functional, without emotion or ornament.
ultrafundamentalism noun: An extreme fundamentalist attitude or approach.
ultrafundamentalist adjective, noun: Subscribing to extreme, radical fundamentalism
ultrafunky adjective: Extremely funky.
ultrafuturistic adjective: extremely futuristic
ultragallant adjective: extremely gallant
ultragaseous adjective: Having the properties exhibited by gases under very low pressures (one millionth of an atmosphere or less).
ultrageeky adjective: Exceptionally geeky.
ultragenteel adjective: Very genteel.
ultraglamorous adjective: Extremely glamorous.
ultraglossy adjective: Extremely glossy.
ultragood adjective: extremely good
ultragraph noun: A generalization of a directed graph in which the source of an edge is a set of vertices rather than a single vertex.
ultragreen adjective: Of a very vivid green colour.
ultrahard adjective: Extremely hard; of utmost hardness.
ultrahardness noun: The quality of being ultrahard.
ultraharmonic noun: A harmonic whose frequency is many times that of the fundamental
ultrahazardous adjective: Extremely hazardous.
ultrahazardous activity noun: An activity that is so dangerous that any person engaging in it will be held strictly liable for harm caused by engaging in the activity, no matter what...
ultrahealing adjective: Very strongly healing.
ultraheat noun, verb: Extreme heat.
ultraheavy adjective: Describing any atom that has a very large atomic weight; especially those that lie beyond fermium in the periodic table
ultraheroic adjective: extremely heroic
ultrahigh adjective: Alternative spelling of ultra-high.
ultrahip adjective: Extremely hip.
ultraholomorphic adjective: Holomorphic and such that all derivatives are uniformly bounded by a constant multiple of the argument that can be associated with the order of the derivative.
ultrahomogeneity noun: The condition of being ultrahomogeneous
ultrahomogeneous adjective: Such that every isomorphism between finitely generated substructures extends to an automorphism of itself.
ultrahot adjective: Extremely or exceedingly hot; of utmost hotness.
ultrahuman adjective: Having powers much greater than those of a normal human; superhuman
ultrahydrophobic adjective: superhydrophobic
ultrahydrophobicity noun: The quality of being ultrahydrophobic.
ultrahyped adjective: Promoted with an extreme amount of hype.
ultrahyperarid adjective: Extremely arid
ultrahyperbolic adjective: Pertaining to an ultrahyperbolic equation.
ultrahypofractionation noun: An extreme form of hypofractionation
ultraimperialism noun: A comparatively peaceful phase of capitalism that comes after the era of imperialism.
ultraimperialist adjective, noun: Extremely imperialist.
ultraimperialistic adjective: Extremely imperialistic.
ultraimpersonal adjective: Extremely impersonal.
ultrainclusive adjective: extremely inclusive
ultraindulgent adjective: extremely indulgent
ultraingenious adjective: Extremely ingenious.
ultraintellectual adjective: Highly intellectual.
ultraintelligent adjective: Extremely intelligent; of utmost intelligence.
ultraintense adjective: Extremely intense; of utmost intensity.
ultraintensive adjective: Extremely intensive, of utmost concentration, exceedingly concentrated.
ultraintimate adjective: extremely intimate
ultraintuitionism noun: Ultrafinitism.
ultraintuitionist noun: A proponent of ultraintuitionism; an ultrafinitist.
ultrainvolved adjective: extremely involved
ultraism noun: Radicalism or political extremism.
ultraist noun: One who pushes a principle or measure to extremes
ultraistic adjective: Characteristic of ultraism.
ultralaborious adjective: extremely laborious
ultralarge adjective: Very large
ultralean adjective: Especially lean; streamlined.
ultraleft adjective, noun /ˌʌl.tɹəˈlɛft/: Of or pertaining to ultraleftism.
ultraleftism noun /ˌʌl.tɹəˈlɛf.tɪzəm/: The ideology of the ultraleft, associated with left communism, characterized by a rejection of both social democracy and state socialism in favor of...
ultraleftist adjective, noun /ˈʌl.tɹəˌlɛf.tɪst/: An adherent of ultraleftism (all senses).
ultralegal adjective: Going beyond what is authorized or set out by law.
ultralenient adjective: extremely lenient
ultralente noun /ˌʌltɹəˈlɛnteɪ/: A long-acting form of insulin.
ultralethal adjective: Exceedingly lethal or deadly.
ultraliberal adjective, noun: Extremely liberal.
ultraliberalism noun: Ultraliberal beliefs generally.
ultralight adjective, noun /ˌʌltɹəˈlaɪt/: Extremely light; weighing very little.
ultralightness noun: The quality of being ultralight.
ultralightweight adjective: Extremely lightweight.
ultralinear adjective: Extremely linear.
ultralocal adjective: Whose properties are influenced by its immediate neighbours only
ultralocality noun: The state of being ultralocal
ultralocalization noun: The act of making, or of treating as ultralocal
ultralogical adjective: extremely logical
ultralong adjective: Extremely long.
ultraloose adjective: Extremely loose.
ultralounge noun: Alternative form of ultra lounge.
ultralow adjective: Extremely low.
ultralow cost carrier noun: Alternative form of ultra low cost carrier.
ultraloyal adjective: Extremely loyal.
ultraloyalist noun: One who has strong loyalist beliefs.
ultralucid adjective: Extremely lucid.
ultraluminous adjective: Very luminous
ultraluxe adjective: Very luxurious.
ultraluxurious adjective: Highly luxurious.
ultraluxury adjective: Providing an extremely high degree of luxury, well beyond what "luxury" would normally imply
ultramacho adjective: Highly macho.
ultramafic adjective, noun: Describing igneous rocks that contain magnesium and iron and only a very small amount of silica, such as are found in the Earth’s mantle.
ultramafite noun: ultramafic rock
ultramagnetic adjective: Extremely magnetic (used especially to describe magnetars)
ultramaphic adjective: Alternative form of ultramafic.
ultramarathon noun: A running race over a distance longer than 42.195 km (26 miles 385 yard), the length of a standard marathon.
ultramarathoner noun: Someone who participates in ultramarathons.
ultramarathoning noun: The sport of running ultramarathons.
ultramarathonist noun: Ultramarathoner.
ultramarine adjective, noun /ˌʌltɹəməˈɹiːn/: Beyond the sea.
ultramarine ash noun: A pigment which is the residuum of lapis lazuli after the ultramarine has been extracted, and which was formerly used as a middle or neutral tint for flesh,...
ultramasculine adjective: Highly masculine.
ultramasculinity noun: Extreme masculinity.
ultramassive adjective /ˈʌltɹəˈmæs.ɪv/: Extraordinarily massive; of utmost massiveness.
ultramaternal adjective: Extremely maternal.
ultramatricial adjective: Isomorphic to a countable direct limit of matricial algebras.
ultramature adjective: Extremely mature.
ultramaximal adjective /ˈʌltɹəˈmæksɪməl/: Above or beyond a maximum, for example on a graph.
ultramaximum adjective: Greater than maximum; supermaximal; ultramaximal.
ultramelilitolite noun: A melilitolite with more than 65% melilite.
ultramer noun: Any of a class of synthetic DNA sequences
ultrameric adjective: Relating to ultramers
ultrametamorphic adjective: Of or relating to ultrametamorphosis.
ultrametamorphism noun: The process of metamorphism at extreme temperatures and pressures where rocks are partially heated to magma, to which the affected rocks then become...
ultrametamorphosis noun: A form of metamorphosis that occurs at a temperature and pressure just below the fusion point of the rock
ultrametric adjective, noun: Describing a metric whose triangle inequality has the stronger form d(x,z)< max d(x,y),d(y,z).
ultrametricised adjective: Alternative form of ultrametricized.
ultrametricity noun: The condition of being ultrametric.
ultrametricization noun: The process, or the result of ultrametricizing
ultrametricize verb: To make ultrametric.
ultrametricized adjective, verb: Converted to ultrametric form
ultrametrics noun: The study and use of ultrametric systems
ultramicro adjective: ultramicroscopic
ultramicroanalysis noun: An analysis on a smaller scale than microanalysis.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0): each word's first meaning. A word with a page of its own links to it; for the rest, this line is PlainSpell's entry. Total under U: 26,317 words, in 88 parts.