|n.||1.||The act of expressing; the act of forcing out by pressure; as, the expression of juices or oils; also, of extorting or eliciting; as, a forcible expression of truth.|
|2.||The act of declaring or signifying; declaration; utterance; as, an expression of the public will.|
|3.||Lively or vivid representation of meaning, sentiment, or feeling, etc.; significant and impressive indication, whether by language, appearance, or gesture; that manner or style which gives life and suggestive force to ideas and sentiments; as, he reads with expression; her performance on the piano has expression.|
|4.||That which is expressed by a countenance, a posture, a work of art, etc.; look, as indicative of thought or feeling.|
|5.||A form of words in which an idea or sentiment is conveyed; a mode of speech; a phrase; as, a common expression; an odd expression.|
|6.||(Math.) The representation of any quantity or relation by appropriate characters or symbols, usually in a specific order.|
|7.||(Genetics) the production of products by a gene that cause the appearance of the corresponding protein or phenotype; - of a gene or of an organism with a specific gene; as, the expression the beta-galactosidase positive phenotype,|
|8.||(Computers) a combination of characters linked by operators, occurring as part of the code of a computer program, which must be evaluated according to the rules of the computer language in order to produce a resulting value.|
|Noun||1.||expression - the expression on a person's face; "a sad expression"; "a look of triumph"; "an angry face"|
|2.||expression - expression without words; "tears are an expression of grief"; "the pulse is a reflection of the heart's condition"|
|3.||expression - the communication (in speech or writing) of your beliefs or opinions; "expressions of good will"; "he helped me find expression for my ideas"|
|4.||expression - a word or phrase that particular people use in particular situations; "pardon the expression"|
|5.||expression - the style of expressing yourself; "he suggested a better formulation"; "his manner of expression showed how much he cared"|
|6.||expression - a group of symbols that make a mathematical statement|
|7.||expression - (genetics) the process of expressing a gene|
|8.||expression - a group of words that form a constituent of a sentence and are considered as a single unit; "I concluded from his awkward constructions that he was a foreigner"|
|9.||expression - the act of forcing something out by squeezing or pressing; "the expression of milk from her breast"|
EXPRESSION. The term or use of language employed to explain a thing.
2. It is a general rule, that expressions shall be construed, when they are capable of several significations, so as to give operation to the agreement, act, or will, if it can be done; and an expression is always to be understood in the sense most agreeable to the nature of the contract. Vide Clause; Construction; Equivocal; Interpretation; Words.
|(programming)||expression - Any piece of program code in a high-level language which, when (if) its execution terminates, returns a
value. In most programming languages, expressions consist of
constants, variables, operators, functions, and parentheses.
The operators and functions may be built-in or user defined.
Languages differ on how expressions of different types may
be combined - with some combination of explicit casts and
The syntax of expressions generally follows conventional mathematical notation, though some languages such as Lisp or Forth have their own idiosyncratic syntax.