noun, plural U’s or Us, u’s or us.
- the 21st letter of the English alphabet, a vowel.
- any spoken sound represented by the letter U or u, as in music, rule, curious, put, or jug.
- something having the shape of a U.
- a written or printed representation of the letter U or u.
- a device, as a printer’s type, for reproducing the letter U or u.
pronoun Pronunciation Spelling.
- you: Shoes Fixed While U Wait.
noun
- a Burmese title of respect applicable to a man: used before the proper name.
adjective Informal.
- characteristic of or appropriate to the upper class, especially of Great Britain.
Symbol.
- (on a packaged product) certified as kosher by the Union of Orthodox Hebrew Congregations.
- the 21st in order or in a series, or, when I is omitted, the 20th.
- Chemistry. uranium.
- Biochemistry. uracil.
- Thermodynamics. internal energy.
- British. a designation for motion pictures determined as being acceptable for viewing by all age groups.Compare A(def 11), X(def 9).
- and.
- uniform.
- unit.
- unsatisfactory.
- upper.
- and.
- uncle.
- uniform.
- union.
- unit.
- united.
- university.
- unsatisfactory.
- upper.
noun plural u’s, U’s or Us
- the 21st letter and fifth vowel of the modern English alphabet
- any of several speech sounds represented by this letter, in English as in mute, cut, hurt, sure, pull, or minus
-
- something shaped like a U
- (in combination)a U-bolt; a U-turn
symbol for
- united
- unionist
- university
- (in Britain)
- universal (used to describe a category of film certified as suitable for viewing by anyone)
- (as modifier)a U film
- chem uranium
- biochem uracil
abbreviation for
- text messaging you
adjective
- British old-fashioned, informal (esp of language habits) characteristic of or appropriate to the upper classCompare non-U
noun
- a Burmese title of respect for men, equivalent to Mr
abbreviation for
- maths union
- unit
- united
- university
- upper
for historical evolution, see V. Used punningly for you by 1588 [“Love’s Labour’s Lost,” V.i.60], not long after the pronunciation shift that made the vowel a homonym of the pronoun. As a simple shorthand (without intentional word-play), it is recorded from 1862. Common in business abbreviations since 1923 (e.g. U-Haul, attested from 1951).
- The symbol for the elementuranium
- Abbreviation of uracil
- The symbol for uranium.
U
- A heavy, silvery-white, highly toxic, radioactive metallic element of the actinide series. It has 14 known isotopes, of which U 238 is the most naturally abundant, occurring in several minerals. Fissionable isotopes, especially U 235, are used in nuclear reactors and nuclear weapons. Atomic number 92; atomic weight 238.03; melting point 1,132°C; boiling point 3,818°C; specific gravity 18.95; valence 2, 3, 4, 5, 6. See Periodic Table.