definition of the word expression

From Middle English < Latin expressio (a pressing out).

• IPA: /ɪkˈspɹɛʃ.ən/, SAMPA: /Ik"sprES.@n/
•  Audio (US)^{help, file}
• Rhymes: -ɛʃən
• Hyphenation: ex‧pres‧sion

expression (plural expressions)

1. A particular way of phrasing an idea.
2. A colloquialism or idiom.

   The expression "break a leg!" should not be taken literally.

3. A facial appearance usually associated with an emotion.
4. (mathematics) An arrangement of symbols denoting values, operations performed on them, and grouping symbols.
5. (biology) The process of translating a gene into a protein.
6. (programming) A piece of code in a high-level language that returns a value.
7. The process of expressing milk

• arithmetic expression
• logical expression

• express
• expressive

Definition from Wiktionary Content avaible with GNU Free Documentation License

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