An algebraic expression representing a function by binding one or more parameters to an expression which may contain those parameters.

(computing theory) A concise description of a regular formal language with notations for concatenation, alternation, and iteration (repetition) of subexpressions.

The means by which one's personal characteristics are displayed; showing one's internal beliefs or character by means of external actions/changes.

The expression or countenance that seems to an onlooker to be represented by the appearance of a person or animals's face, resulting from specific use of that person's facial muscles.

(mathematics) an expression that has been condensed and shortened, so that all the like terms have been combined

Language in any of a number of different modalities such as speech, sign or writing.

(law) The right to express an opinion in public without being restrained or censored.

Any of various rifles that propel the bullet at high velocity to maximize point-blank range.

plural of express rifle

plural of express kidnapping