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u    音标拼音: [j'u]
n. 字母u

字母u

u
adj 1: (chiefly British) of or appropriate to the upper classes
especially in language use
n 1: a base containing nitrogen that is found in RNA (but not in
DNA) and derived from pyrimidine; pairs with adenine [synonym:
{uracil}, {U}]
2: a heavy toxic silvery-white radioactive metallic element;
occurs in many isotopes; used for nuclear fuels and nuclear
weapons [synonym: {uranium}, {U}, {atomic number 92}]
3: the 21st letter of the Roman alphabet [synonym: {U}, {u}]

Molt \Molt\, Moult \Moult\, v. i. [imp. & p. p. {Molted} or
{Moulted}; p. pr. & vb. n. {Molting} or {Moulting}.] [OE.
mouten, L. mutare. See {Mew} to molt, and cf. {Mute}, v. t.]
[The prevalent spelling is, perhaps, {moult}; but as the {u}
has not been inserted in the otherwords of this class, as,
bolt, colt, dolt, etc., it is desirable to complete the
analogy by the spelling {molt}.]
To shed or cast the hair, feathers, skin, horns, or the like,
as an animal or a bird. --Bacon.
[1913 Webster] Molt


U \U\ ([=u]),
the twenty-first letter of the English alphabet, is a cursive
form of the letter V, with which it was formerly used
interchangeably, both letters being then used both as vowels
and consonants. U and V are now, however, differentiated, U
being used only as a vowel or semivowel, and V only as a
consonant. The true primary vowel sound of U, in Anglo-Saxon,
was the sound which it still retains in most of the languages
of Europe, that of long oo, as in tool, and short oo, as in
wood, answering to the French ou in tour. Etymologically U is
most closely related to o, y (vowel), w, and v; as in two,
duet, dyad, twice; top, tuft; sop, sup; auspice, aviary. See
{V}, also {O} and {Y}.
[1913 Webster] See Guide to Pronunciation, [sect][sect]
130-144.
[1913 Webster]


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  • YouTube
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  • United Airlines - Airline Tickets, Travel Deals and Flights
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  • Type U with Accent Ú, Ù, Û, Ũ, Ü or ú, ù, û, ũ, ü - ILIFEHACKS
    Learn how to type U with accent marks (Ú, Ù, Û, Ũ, Ü, or ú, ù, û, ũ, ü) on Windows, Mac, Google Docs and Word Find out the types of accents, alt codes, keyboard shortcuts and special characters for U letter
  • U-Haul Moving Storage at Rio Rancho
    U-Haul has the largest selection of in-town and one-way trucks and trailers available in your area U-Haul offers an easy moving process when you rent a truck or trailer, which include: cargo and enclosed trailers, utility trailers, car trailers and motorcycle trailers
  • YouTube
    © 2026 Google LLC
  • U - Wikipedia
    U (minuscule: u) is the twenty-first letter and the fifth vowel letter of the Latin alphabet, used in the modern English alphabet and the alphabets of other western European languages and others worldwide
  • U - Watch FREE On Demand | Drama | Comedy | Entertainment
    U is the on demand home of U Dave, U Drama, U W U Yesterday Stream thousands of hours of the best comedy, drama, entertainment documentaries for free
  • U with Accent (ù ú û ü) on Keyboard — How to Type U with Accents
    What’s the difference between ü and u? They are different letters in many languages ü changes pronunciation and can change the meaning of a word (especially in German)
  • Û - Wikipedia
    In French, û does not change the pronunciation of the letter u except in jeune "young", which is pronounced differently from jeûne "a fast" In some other words like mû, the circumflex has no disambiguating value; attempts have been made to abolish it in such words





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