u

Meanings

Noun

• a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine
• a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
• the 21st letter of the Roman alphabet

Adjective Satellite

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

Synonyms

atomic number 92, uracil, uranium