The science and engineering of interacting surfaces in relative motion; the study and application of technology using the principles of friction, lubrication and wear.

triboluminescencenoun

The production of light by friction.

triboluminescentadj

Exhibiting or relating to triboluminescence.

tribomechanicaladj

Of or pertaining to the tribological and mechanical properties of a system

tribometernoun

A device that measures the coefficient of friction of a surface.

tribometricadj

Of or pertaining to tribometry.

tribometrynoun

The measurement of friction on a surface, as carried out with a tribometer.

Tribonacciname

A variant of the Fibonacci sequence in which the preceding three terms, rather than the preceding two, are summed at each iteration.

tribonucleationnoun

nucleation, typically of gas bubbles, caused by friction

triboobnoun

A fictional character having exactly three breasts.

triboolnoun

A variable that behaves similar to a Boolean, but allows three values instead of two.

tribophysicaladj

Of or relating to tribophysics.

tribophysicsnoun

The physics of friction.

tribopolymernoun

A polymer formed by a tribochemical reaction

tribopolymerizationnoun

The formation of tribopolymers by surface rubbing.

triboratenoun

Any borate having three boron atoms.

triborderadj

Of or relating to three geographical borders.

triboreactionnoun

A reaction initiated by surface friction

triboroughadj

Of or relating to three boroughs.

tribosonnoun

Any particle composed of three bosons

tribosphenicadj

Describing the original placental molars that have a talonid in the lower molar teeth, where the protocone of the upper teeth hits. Definied by George Gaylord Simpson in 1936.

tribosystemnoun

Any system of tribological components (such as bearings).

tribotestnoun

A physical test of friction, lubrication, and wear.

tribothermoluminescencenoun

Thermoluminescence resulting from friction.

tribouletnoun

A jester dressed entirely in red.

tribrachnoun

A metrical foot consisting of three short syllables.

tribrachicadj

Composed of three short (or unstressed) syllables.

tribracteateadj

Having three bracts.

tribracteolateadj

Having three bracteoles.

tribridnoun

An organism, object, or method comprising three disparate individual components

tribridgedadj

Having three bridges across a ring

tribromidenoun

any bromide containing three bromine atoms in each molecule

tribrominationnoun

The introduction of three bromine atoms into a molecule.

tribromonoun

(in combination) Three bromine atoms in a molecule.

tribromoanisolenoun

A brominated derivative of anisole, one of the chemicals responsible for cork taint.

tribromoethanolnoun

A brominated alcohol formerly used as an anaesthetic in humans and now mainly used in laboratory animals.

tribromometacresolnoun

An antifungal drug, 2,4,6-tribromo-3-methylphenol.

tribualadj

Of or relating to a tribe; tribal.

tribuallyadv

Tribally.

tribufosnoun

An organophosphorus pesticide, [1-bis(butylsulfanyl)phosphorylsulfanylbutane].

tribulateverb

To trouble greatly; to afflict with tribulation.

tribulationnoun

Any adversity; a trying period or event.

Spelling & Dictionary Insight

The English alphabetical index for the letter T contains 27,828 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 557 pages, and you are currently viewing page 430. Every row above is a dictionary-backed entry with a canonical slug, and each links through to a full definition page with pronunciation, senses, etymology, and related-word data where available.

On this page 50 of 50 entries carry a part-of-speech tag and 50 carry at least one stored definition. Coverage varies across letters because Wiktionary volunteers build entries at different speeds for different parts of the alphabet, letters with common starting sounds (S, C, T, P) usually have the densest coverage, while less frequent starters (X, Q, Z) tend to have shorter but more specialised lists. PlainSpell surfaces whatever data is present and links back to the source when a definition is not yet recorded.

For readers using this index as a spelling reference, the guarantee is that every form you see on the list is a documented English headword, not a guess, not a derived inflection lacking a lemma row. If a word you expected to find is absent from the "T" list, it usually means the form exists only as an inflection of another lemma (e.g. a past participle stored under the infinitive) or the entry has not yet been imported from Wiktionary. Use the search bar or the misspelling lookup to resolve these cases.