U, u

[yoo]
noun, plural U's or Us, u's or us.
1.
the 21st letter of the English alphabet, a vowel.
2.
any spoken sound represented by the letter U or u, as in music, rule, curious, put, or jug.
3.
something having the shape of a U .
4.
a written or printed representation of the letter U or u.
5.
a device, as a printer's type, for reproducing the letter U or u.
Dictionary.com Unabridged

U

[yoo]
pronoun Pronunciation spelling.
you : Shoes Fixed While U Wait.

U

[yoo]
adjective Informal.
characteristic of or appropriate to the upper class, especially of Great Britain.

Origin:
u(pper class)

U

[oo]
noun
a Burmese title of respect applicable to a man: used before the proper name.

U

Symbol.
1.
(on a packaged product) certified as kosher by the Union of Orthodox hebrew Congregations.
2.
the 21st in order or in a series, or, when I is omitted, the 20th.
3.
Chemistry, uranium.
4.
Biochemistry, uracil.
5.
Thermodynamics, internal energy.
6.
British. a designation for motion pictures determined as being acceptable for viewing by all age groups. Compare A ( def 11 ), X ( def 9 ).

U.

1

Origin:
< German und

u.

1

Origin:
< German und

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
u or U (juː)
 
n , pl u's, U's, Us
1.  the 21st letter and fifth vowel of the modern English alphabet
2.  any of several speech sounds represented by this letter, in English as in mute, cut, hurt, sure, pull, or minus
3.  a.  something shaped like a U
 b.  (in combination): a U-bolt; a U-turn
 
U or U
 
n

U1
 
symbol for
1.  united
2.  unionist
3.  university
4.  in Britain
 a.  universal (used to describe a category of film certified as suitable for viewing by anyone)
 b.  (as modifier): a U film
5.  chem uranium
6.  biochem uracil
 
abbreviation for
7.  text messaging you
 
adj
8.  old-fashioned, informal (Brit) Compare non-U (esp of language habits) characteristic of or appropriate to the upper class

U2 (uː)
 
n
a Burmese title of respect for men, equivalent to Mr

U.
 
abbreviation for
1.  maths union
2.  unit
3.  united
4.  university
5.  upper

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

u
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).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

U 3

The symbol for the element uranium.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
U  
  1. Abbreviation of uracil

  2. The symbol for uranium.


uranium   (y-rā'nē-əm)  Pronunciation Key 
Symbol 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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Abbreviations & Acronyms
u
up quark
U
  1. internal energy

  2. [residential] unit

  3. units

  4. uracil

  5. uranium

  6. you

u.
  1. unit

  2. units

  3. upper

U.
  1. uncle

  2. University

  3. unsatisfactory

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Example sentences for u
The predominant letter in the ending forms of this declension is u.
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