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English dictionary

U

/j//u/

Definitions, examples, synonyms and antonyms from WordNet 3.0.

noun

  1. a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine

    noun.substance

    Source: WordNet 3.0

  2. a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons

    noun.substance

    Source: WordNet 3.0

  3. the 21st letter of the Roman alphabet

    noun.communication

    Source: WordNet 3.0

adjective satellite

  1. (chiefly British) of or appropriate to the upper classes especially in language use

    adj.all

    Source: WordNet 3.0

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