Definition of U

  • (noun) the 21st letter of the Roman alphabet
  • (noun) a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
  • (noun) a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine
  • (adjective satellite) (chiefly British) of or appropriate to the upper classes especially in language use

Homophones of U

Common English words

A list of the most frequently used words in the English languge.

Longest English Words

Longest words in the Oxford Dictionary.