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==Pronunciation==
[ik-spresh-uhn] Show IPA
==Noun==
1. the act of expressing or setting forth in [[words]]: the free expression of [[political]] opinions.
2. a particular word, phrase, or form of [[words]]: old-fashioned expressions.
3. the [[manner]] or form in which a [[thing]] is expressed in words; wording; phrasing: delicacy of expression.
4. the [[power]] of expressing in words: "[[joy]] beyond expression".
5. indication of [[feeling]], [[spirit]], [[character]], etc., as on the [[face]], in the [[voice]], or in [[art]]istic execution: the [[song|lyric]] expression embodied in his poetry.
6. a look or [[tone|intonation]] expressing [[personal]] reaction, feeling, etc.: a shocked expression.
7. the [[quality]] or power of expressing an attitude, [[emotion]], etc.: a face that lacks expression; to read with expression.
8. the [[act]] of expressing or representing, as by [[symbols]].
9. [[Mathematics]]. a [[symbol]] or a combination of symbols representing a [[value]], relation, or the like.
10. [[Linguistics]]. the stylistic characteristics of an utterance (opposed to [[meaning]] ).
11. [[Linguistics]]. the [[system]] of verbal utterances specific to a language (opposed to [[content]] ).
12. the act of expressing or pressing out.
13. Computers. a combination of variables, constants, and functions linked by operation [[symbols]] and any required punctuation that describe a rule for calculating a value.
14. [[Genetics]]. a. the action of a [[gene]] in the production of a [[protein]] or a [[phenotype]].
::b. expressivity (def. 2).
==Origin==
1425–75; late ME < L expressiōn- (s. of expressiō) a pressing out. See express, -ion
==Related forms==
ex⋅pres⋅sion⋅al, adjective
ex⋅pres⋅sion⋅less, adjective
ex⋅pres⋅sion⋅less⋅ly, adverb
==Synonyms==
1. utterance, declaration, assertion, statement.
2. term, idiom. See phrase.
3. [[language]], diction, phraseology.
4. manifestation, [[sign]].
5. aspect, air.
[[Category: General Reference]]