innervation innervate • innervational · · · Info · Definitions · Synonyms · Characters · · innervation · · Text Latin · · Script 11 · · Length Definitions · · · (noun) the neural or electrical arousal of an organ or muscle or gland. Synonyms: excitation, irritation. · · Noun Definition 1 (noun) the distribution of nerve fibers to an organ or body region. · · Noun Definition 2 Synonyms · · · excitation · · Synonym 1 irritation · · Synonym 2 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 v latin small letter v U+0076