<computer programming> A symbol used as a function, with infix syntax if it has two arguments (e.g. "+") or prefix syntax if it has only one (e.g. Boolean NOT). Many languages use operators for built-in functions such as arithmetic and logic.

(01 Mar 1995)

<molecular biology> The site on DNA to which a specific repressor protein binds and prevents the initiation of transcription at the adjacent promoter.

This entry appears with permission from the Dictionary of Cell and Molecular Biology

(11 Mar 2008)