An internal combustion engine of a type resembling the diesel engine in having heavy oil for its fuel, which is injected in a spray just before the end of the compression stroke and is fired without electrical ignition. The fuel is sprayed into an iron box (called a hot bulb or hot pot) opening into the combustion chamber, and heated for ignition by a blast lamp until the engine is running, when it is ordinarily kept red-hot by the heat of combustion.

semidigestedadj

Partially digested

semidilapidatedadj

Partly dilapidated.

semidilapidationnoun

The condition of being partly dilapidated.

semidiluteadj

Moderately dilute

semidilutedadj

Partially diluted

semidirectadj

Neither unqualifiedly direct nor unqualifiedly indirect.

semidirect productnoun

A generalisation of direct product such that, in one of two equivalent definitions, only one of the subgroups involved is required to be a normal subgroup.

semidirectedadj

Alternative form of semidirect.

semidirectionaladj

Partially directional

semidisabledadj

Somewhat or partly disabled.

semidiscreteadj

Partially discrete

semidiscretizationnoun

Partial discretization

semidisknoun

A half disk.

semidistributiveadj

Partially distributive

semiditonenoun

The lesser third, having its terms as 6 to 5; a hemiditone.

semidiurnaladj

Twice daily (usually of tides).

semidiurnallyadv

Twice daily.

semidividedadj

Partly divided.

semidivineadj

Half-divine; pertaining to a demigod.

semidocumentarynoun

a drama (film, book or TV) that presents a fictional story incorporating many factual details or actual events

semidomenoun

Half of a dome ("cut" vertically), used to cover a semicircular area.

semidomedadj

In the shape of a semidome.

semidomesticadj

Partially domesticated; accustomed to living together with humans

semidomesticatedadj

Of animals: kept and farmed in a form that does not differ significantly from the wild variety.

semidomesticationnoun

The process of bringing an animal to a semidomesticated state.

Spelling & Dictionary Insight

The English alphabetical index for the letter S contains 54,294 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 1,086 pages, and you are currently viewing page 236. 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 "S" 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.