u

noun, often capitalized, often attributive

\ ˈyü

plural u's or us\ ˈyüz

Definition of u

(Entry 1 of 5)

1a : the 21st letter of the English alphabet

b : a graphic representation of this letter

c : a speech counterpart of orthographic u

2 : a graphic device for reproducing the letter u

3 : one designated u especially as the 21st in order or class

4 [ abbr. for unsatisfactory ]

a : a grade rating a student's work as unsatisfactory

b : one graded or rated with a U

5 : something shaped like the letter U

abbreviation (1)

Definition of u (Entry 2 of 5)

1 unit

2 unsymmetrical

3 physics up (see up entry 4 sense 5)

4 upper

adjective

\ ˈyü

Definition of U (Entry 3 of 5)

: characteristic of the upper classes

abbreviation (2)

Definition of U (Entry 4 of 5)

1 unsatisfactory

2 uracil

symbol

Definition of U (Entry 5 of 5)

uranium

Examples of u in a Sentence

Noun

There are three u's in “unusual.” a word that starts with u

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More Definitions for u

noun

English Language Learners Definition of u

: the 21st letter of the English alphabet

British : a grade given to a student whose work is judged as not satisfactory

See the full definition for u in the English Language Learners Dictionary

noun, often capitalized

\ ˈyü\

plural u's or us\ ˈyüz \

Kids Definition of u

1 : the 21st letter of the English alphabet

2 : a grade rating a student's work as unsatisfactory

abbreviation

Medical Definition of U

(Entry 1 of 2)

uracil

symbol

Medical Definition of U (Entry 2 of 2)

uranium

u

Definition of u

Examples of u in a Sentence

First Known Use of u

History and Etymology for u

English Language Learners Definition of u

Kids Definition of u

Medical Definition of U

u

Definition of u

Examples of u in a Sentence

First Known Use of u

History and Etymology for u

English Language Learners Definition of u

Kids Definition of u

Medical Definition of U

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