English Words: U
23,789 words · Page 460 of 476
A protease, found in the urine, which converts plasminogen to plasmin, and is used in the treatment of deep vein thrombosis.
A urinary stone, being any stone passed from the urinary tract, such as a bladder stone or a kidney stone.
The surgical specialty of medicine that treats disorders of the urinary tract and the urogenital system.
One with a sexual dependency on the smell and/or taste of urine or the sight and sound of someone urinating.
Undinism, a fetish for or sexual dependency on either the smell and/or taste of urine, or the sight and sound of someone urinating.
either of the two posterior abdominal appendages of the lobster, shrimp and some other crustaceans.
Any of a class of tetrapyrroles with four propionic acid groups and four acetic acid groups, involved in the synthesis of porphyrin.
Pertaining to the posterior part of the pyloric division of the stomach of the crayfish and some other crustaceans.
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 460. 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.