Any of a class or organic nitrogen compounds derived from the parent compound NH₂-NH-CO-NH₂; they react with aldehydes and ketones to form semicarbazones.

semicarbonaceousadj

Somewhat or partly carbonaceous.

semicardinaladj

Being or relating to a direction between two adjacent cardinal points, i.e. northwest, northeast, southwest, or southeast.

semicartilaginousadj

Somewhat or partly cartilaginous.

semicastrateverb

To deprive of one testicle.

semicastrationnoun

Synonym of hemicastration.

semicasualadj

somewhat casual.

semicatatonicadj

In a state partially resembling catatonia.

semicategorynoun

Synonym of semigroupoid.

semicelebritynoun

One who is almost a celebrity.

semicelestialadj

Half or partly celestial.

semicellnoun

Half of a cell.

semicensoredadj

Partially censored.

semicensorshipnoun

The state of being semicensored.

semicentenariannoun

Synonym of fiftysomething: A person celebrating a semicentenary; a person between 50 and 59 years old.

semicentenarynoun

Synonym of semicentennial: a 50th anniversary.

semicentennialadj

Of or related to a 50th anniversary, occurring every 50 years.

semicentraladj

almost central

semicentralizedadj

Partly centralized.

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 231. 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.