U, u

[ yoo ]
/ yu /

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.

Definition for u (2 of 9)

U
[ yoo ]
/ yu /

pronoun Pronunciation Spelling.

you: Shoes Fixed While U Wait.

Definition for u (3 of 9)

U
[ oo ]
/ u /

noun

a Burmese title of respect applicable to a man: used before the proper name.

Definition for u (4 of 9)

U
[ yoo ]
/ yu /

adjective Informal.

characteristic of or appropriate to the upper class, especially of Great Britain.

Origin of U

u(pper class)

Definition for u (5 of 9)

U

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).

Definition for u (6 of 9)

u. 1

and.

Origin of u.

1
From the German word und

Definition for u (7 of 9)

u. 2

uniform.
unit.
unsatisfactory.
upper.

Definition for u (8 of 9)

U. 1

and.

Origin of U.

1
From the German word und

Definition for u (9 of 9)

U. 2

Content related to u

What Does The Letter “U” Have To Do With “W”? The 23rd letter of the alphabet is a bit of a wonder in many ways. Do you know where the letter W originates from, and why we even call it "double-U"?
READ MORE

Example sentences from the Web for u

British Dictionary definitions for u (1 of 4)

u

U

/ (juː) /

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
  1. something shaped like a U
  2. (in combination)a U-bolt; a U-turn

British Dictionary definitions for u (2 of 4)

U 1

symbol for

abbreviation for

text messaging you

adjective

British old-fashioned, informal (esp of language habits) characteristic of or appropriate to the upper class Compare non-U

British Dictionary definitions for u (3 of 4)

U 2
/ (uː) /

noun

a Burmese title of respect for men, equivalent to Mr

British Dictionary definitions for u (4 of 4)

U.

abbreviation for

maths union
unit
united
university
upper

Medical definitions for u

U

The symbol for the elementuranium

Scientific definitions for u (1 of 2)

U

Abbreviation of uracil
The symbol for uranium.

Scientific definitions for u (2 of 2)

uranium
[ yu-rā′nē-əm ]

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.