command key commanding officer • command language · · · Info · Definitions · Synonyms · Characters · · command key · · Text Common · · Latin · · Scripts 11 · · Length 4 · · Syllables Definitions · · · (noun) (computer science) the key on a computer keyboard that is used (in combination with some other key) to type control characters. Synonyms: control key, command key. · · Noun Definition 1 Synonyms · · · control key · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 k latin small letter k U+006B m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F y latin small letter y U+0079