U — English Dictionary

Character

1. The twenty-first letter of the English alphabet, called u and written in the Latin script.

   Usage

   • letter
   • uppercase

2. Something shaped like the letter U: A U-turn ('turned a U in the road')

   Usage

   • letter
   • uppercase

3. Something shaped like the letter U: A double upright cordon espalier (also double U, triple U).

   Usage

   • letter
   • uppercase

Noun

1. A U-turn.

   Examples

   Do a U across the divider and get on back here to the office.

2. A film with the film classification U (“universal”).

   Usage

   • UK usage

Adjective

1. Usually in parentheses: abbreviation of unclassified.

   Usage

   • not-comparable
   • usually

Proper noun

1. An Austroasiatic language spoken in China.

   Synonyms

   P'uman

Noun

1. An honorific to a Burmese man

   Examples

   U Thant; U Nu

Noun

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

   Synonyms

   uracil

   Broader terms

   nucleotidebase

2. a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons

   Synonyms

   uraniumatomic number 92

   Broader terms

   metallic elementmetal

3. the 21st letter of the Roman alphabet

   Synonyms

   u

   Broader terms

   letterletter of the alphabetalphabetic character