General English

  • noun a word, or group of words
  • noun a look on a person’s face which shows a feeling
  • noun the act of expressing thoughts and feelings



  • In computer programming, a segment of program code which when executed returns a value. Such an expression may include constants, variables, operators, operands, functions, or the like. A Boolean expression is an example.
  • In mathematics, a combination of numbers, variables, and operations. Also called arithmetic expression.

Information & Library Science

  • noun a word or phrase


  • noun the look on a person’s face which shows what he or she thinks and feels
  • noun the act of pushing something out of the body