u

noun, often capitalized, often attributive
\ˈyü \
plural u's or us\ˈyüz \

Definition of

(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

u

abbreviation (1)

Definition of (Entry 2 of 5)

1 unit

2 unsymmetrical

3 physics up (see up entry 4 sense 5)

4 upper

\ˈyü \

Definition of (Entry 3 of 5)

: characteristic of the upper classes

U

abbreviation (2)

Definition of (Entry 4 of 5)

1 unsatisfactory

2 uracil

U

symbol

Definition of (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

First Known Use of u

Noun

before the 12th century, in the meaning defined at sense 1a

Adjective

1954, in the meaning defined above

History and Etymology for u

Adjective

upper class

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Learn More about u

Dictionary Entries near u

tzut

Tzutuhil

U

u

UA

UAE

uakari

Statistics for u

Look-up Popularity

Time Traveler for u

The first known use of u was before the 12th century

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More Definitions for u

u

noun

English Language Learners Definition of u

: the 21st letter of the English alphabet

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

u

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

Medical Definition of

(Entry 1 of 2)

uracil

U

symbol

Medical Definition of (Entry 2 of 2)

uranium

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More from Merriam-Webster on u

Rhyming Dictionary: Words that rhyme with u

Spanish Central: Translation of u

Nglish: Translation of u for Spanish Speakers

Comments on u

What made you want to look up u? Please tell us where you read or heard it (including the quote, if possible).

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the figure or shape of a crescent moon

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