• IPA: /ɪkˈspɹɛʃ.ən/


  1. The action of expressing thoughts, ideas, feelings, etc.
  2. A particular way of phrasing an idea.
  3. A colloquialism or idiom.
    The expression "break a leg!" should not be taken literally.
  4. A facial appearance usually associated with an emotion.
    They stared at the newcomer with a puzzled expression.
    The best poker players can tell if the opponents have a good hand by looking at their expression.
    Her expression changed from joy to misery after realising her winning lottery ticket had expired.
  5. (mathematics) An arrangement of symbols denoting values, operations performed on them, and grouping symbols.
  6. (biology) The process of translating a gene into a protein.
  7. (programming) A piece of code in a high-level language that returns a value.
  8. A specific blend of whisky.
  9. (biology) The act of pressing or squeezing out.
    expression from a gland
    the expression of milk from the mammaries
  10. (music) The tone of voice or sound in music.
Related terms
  • expression pedal
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