expression (ɪkˈsprɛʃən)
n
1. the act or an instance of transforming ideas into words
2. a manifestation of an emotion, feeling, etc, without words: tears are an expression of grief.
3. (Art Terms) communication of emotion through music, painting, etc
4. a look on the face that indicates mood or emotion: a joyful expression.
5. (Linguistics) the choice of words, phrases, syntax, intonation, etc, in communicating
6. a particular phrase used conventionally to express something: a dialect expression.
7. the act or process of forcing or squeezing out a liquid
8. (Mathematics) maths a variable, function, or some combination of constants, variables, or functions
9. (Genetics) genetics the effect of a particular gene on the phenotype