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Meaning of word u from English dictionary with examples, synonyms and antonyms.

u   noun

Meaning : A base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine. Pairs with adenine.

Synonyms : uracil

Meaning : A heavy toxic silvery-white radioactive metallic element. Occurs in many isotopes. Used for nuclear fuels and nuclear weapons.

Synonyms : atomic number 92, uranium

Meaning : The 21st letter of the Roman alphabet.

u   adjective

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