(colloquial, humorous) One's own legs used for walking, instead of other forms of transport.

(genetics) The transcription and translation of a gene into messenger RNA and thus into a protein.

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

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

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.

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

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.

plural of regular expression

plural of facial expression