<p><strong>Noun</strong></p><ul><li>the act of expressing or setting forth in words: the free expression of political opinions.</li><li>a particular word, phrase, or form of words: old-fashioned expressions.</li><li>the manner or form in which a thing may be expressed in words; wording; phrasing: delicacy of expression.</li><li>the power of expressing in words: joy beyond expression.</li><li>indication of feeling, spirit, character, etc., as on the face, in the voice, or in artistic execution: the lyric expression embodied in his poetry.</li><li>a look or intonation expressing personal reaction, feeling, etc.: a shocked expression.</li><li>the quality or power of expressing an attitude, emotion, etc.: a face that lacks expression; to read with expression.</li><li>the act of expressing or representing, as by symbols.</li><li>Mathematics. a symbol or a combination of symbols representing a value, relation, or the like.</li><li>Linguistics. the stylistic characteristics of an utterance (meaning).</li><li>Linguistics. the system of verbal utterances specific to a language (content 1).</li><li>the act of expressing or pressing out.</li><li>Computers. a combination of variables, constants, and functions linked by operation symbols and any required punctuation that describe a rule for calculating a value.</li><li>Genetics. the action of a gene in the production of a protein or a phenotype.</li><li>expressivity (def 2).</li></ul>