单词 | u |
释义 | u1/juː /abbreviation Physics Denoting quantum states or wave functions which change sign on inversion through the origin. The opposite of g. From German ungerade 'odd' symbol [in combination] (In units of measurement) micro- (10−6): direct read-out of concentration in ug or mg/l Substituted for mu U2/juː /(also u) noun (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 U3/juː /abbreviation 1(In names of sports clubs) United: Oxford U 2British Universal (denoting films classified as suitable without restriction). 3Uruguay (international vehicle registration). 4 (also u) informal You: what will u do next? symbol The chemical element uranium. U4/juː /adjective British informal (Of language or social behaviour) characteristic of or appropriate to the upper social classes: U manners Origin1950s: 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). U5/uː /noun A Burmese title of respect before a man’s name, equivalent to Mr: U Thien San |
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