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

1. The 21st letter of the Roman alphabet
   - U

1. A base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine
   - uracil 
2. A heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
   - uranium, atomic number 92

Derived forms: Us

See also: upper-class

Type of: alphabetic character, base, letter, letter of the alphabet, metal, metallic element, nucleotide

Part of: Latin alphabet, pitchblende, ribonucleic acid, RNA, Roman alphabet, uraninite

Encyclopedia: U U, Me aur Hum U, Me Aur Hum U,S,

• owing
• owl
• owlclaws
• owlet
• owlet moth
• owlish
• owlishly
• OWLT
• own
• own goal
• own right
• own up
• owned
• owner
• owner-driver
• owner-occupied
• owner-occupier
• ownerless
• ownership
• ox
• ox-eyed
• ox-eyed daisy
• oxacillin
• oxalacetate
• oxalacetic acid