Link Centre Dictionary

U

UK/juː/ US/jɪʊ̯/ common uk

noun

1.

a nitrogen-containing base found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine

Synonyms
2.

a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons

3.

the 21st letter of the Roman alphabet

adjective

1.

(chiefly British) of or appropriate to the upper classes especially in language use

Origin

From Middle English lower case letter v (also written u), from Old English lower case u, from 7th century replacement by lower case u of the Anglo-Saxon Futhorc letter ᚢ (u, ur), derived from Raetic letter u. Before the 1700s, the pointed form v was written at the beginning of a word, while a rounded form u was used elsewhere, regardless of sound. So whereas valor and excuse appeared as in modern printing, have and upon were printed haue and vpon. Eventually, in the 1700s, to differentiate between the consonant and vowel sounds, the v form was used to represent the consonant, and u the vowel sound. v then preceded u in the alphabet, but the order has since reversed.

Phrases

  • bust a U
  • long u
  • short u
  • U engine
  • U of Dub
  • U of T

Related words

Narrower terms

WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.