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

  synonyms : atomic number 92 , uranium

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

  synonyms : uracil

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

WordNet® 3.0, © 2006 by Princeton University.

•   Add   Mnemonic      Origin      Usage      Flickr-Image      Comment
•   To add this word to Your wordlists click here
•   Click here to view photos related to this word from
•   http://www.mnemonicdictionary.com/word/u