U

U ¹  (y)

adj.

Chiefly British Of or appropriate to the upper class, especially in language usage.

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[u(pper class).]

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U ²  ()

n.

Used as a courtesy title before the name of a man in a Burmese-speaking area.

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[Burmese.]

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U ³

1. The symbol for the element uranium.

2. The symbol for internal energy.

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u ¹ or U  (y)

n. pl. u's or U's also us or Us

1. The 21st letter of the modern English alphabet.

2. Any of the speech sounds represented by the letter u.

3. The 21st in a series.

4. Something shaped like the letter U.

5. U A grade that indicates an unsatisfactory status.

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u ²

abbr.

up quark

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U

1. (in Britain) universal (used to describe a film certified as suitable for viewing by anyone)

2. Chem uranium

Adjective

Brit informal (of language or behaviour) characteristic of the upper class

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U

1. Abbreviation of uracil

2. The symbol for uranium.

Thesaurus

Noun	1.	U - a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine uracil ribonucleic acid, RNA - (biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in the cell; "ribonucleic acid is the genetic material of some viruses" nucleotide, base - a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA)
	2.	U - a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons atomic number 92, uranium metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. uranium 235 - a uranium isotope with mass number 235; capable of sustaining chain reactions uranium 238 - the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239 pitchblende, uraninite - a mineral consisting of uranium oxide and trace amounts of radium and thorium and polonium and lead and helium; uraninite in massive form is called pitchblende which is the chief uranium ore
	3.	u - the 21st letter of the Roman alphabet Latin alphabet, Roman alphabet - the alphabet evolved by the ancient Romans which serves for writing most of the languages of western Europe alphabetic character, letter of the alphabet, letter - the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters"
Adj.	1.	u - (chiefly British) of or appropriate to the upper classes especially in language use Britain, Great Britain, U.K., UK, United Kingdom, United Kingdom of Great Britain and Northern Ireland - a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom upper-class - occupying the highest socioeconomic position in a society

Translations

U, u [juː] n (letter) → U, u f;

U for Uncle → U de Uruguay

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U n abbr (BRIT) (CINE) (= universal) → todos los públicos

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U, u [juː] n (= letter) → U, u m;

U for Uncle → U comme Ursule

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U n abbr (Brit) (Cine) (= universal) → tous publics

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U¹, u [juː] n (letter) → U nt, u nt;

U for Uncle → U wie Ulrich

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U² [juː] (Brit) n abbr (Cine) (= universal) → Klassifikation für jugendfreie Filme

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U, u [juː] n (letter) → U, u m or f inv;

U for Uncle → U come Udine

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U n abbr (BRIT ) (CINE) (= universal) → per tutti