Hay 5 definiciones de u en inglés:

u1

Saltos de línea: u

abreviatura

Physics
Denoting quantum states or wave functions which change sign on inversion through the origin. The opposite of g.
[from German ungerade 'odd']

símbolo

[in combination] Volver al principio  
(In units of measurement) micro- (10−6): direct read-out of concentration in ug or mg/l
[substituted for mu]

Definición de u en:

Hay 5 definiciones de u en inglés:

U2

Saltos de línea: U
(also u)

sustantivo (plural Us or U's)

1The twenty-first letter of the alphabet.
1.1Denoting the next after T in a set of items, categories, etc.
2 (U) A shape like that of a capital U, especially a cross section: [in combination]: U-shaped glaciated valleys

Definición de u en:

Hay 5 definiciones de u en inglés:

U4

Saltos de línea: U

adjetivo

British informal
(Of language or social behaviour) characteristic of or appropriate to the upper social classes: U manners

Origen

1950s: abbreviation of upper class; coined in 1954 by Alan S. C. Ross, professor of linguistics, the term was popularized by its use in Nancy Mitford's Noblesse Oblige (1956).

Definición de u en: