English Words: U
23,789 words · Page 455 of 476
A hydrolase enzyme that catalyzes the reaction of urethane and water into ethanol, carbon dioxide, and ammonia.
A white crystalline organic compound, ethyl-carbamate, NH₂COOC₂H₅, used in the synthesis of other organic compounds.
The tube through which urine exits the body and, in male placental mammals, through which semen is ejaculated.
A sexual activity involving stimulation of a sexual partner's urethra, almost exclusively when they have a vagina.
Inflammation of the urethra, a finding possible in many diseases (e.g., STI and non-STI, including UTI) but often in gonorrhea and chlamydia.
A surgical procedure that provides support to the urethra, sometimes performed in the treatment of incontinence.
A procedure that creates a permanent opening in the urethra, typically to remove obstructions to the flow of urine.
The customs of an Arab society, used in jurisprudence when the Qur'an and Sunnah do not mandate a ruling.
Spelling & Dictionary Insight
The English alphabetical index for the letter U contains 23,789 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 476 pages, and you are currently viewing page 455. 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 "U" 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.