fifth cranial nerve fifth columnist • fifth crusade · · · Info · Definitions · Synonyms · Characters · · fifth cranial nerve · · Text Common · · Latin · · Scripts 19 · · Length 4 · · Syllables Definitions · · · (noun) the main sensory nerve of the face and motor nerve for the muscles of mastication. Synonyms: trigeminal, trigeminal nerve, trigeminus, nervus trigeminus, fifth cranial nerve. · · Noun Definition 1 Synonyms · · · trigeminal · · Synonym 1 trigeminal nerve · · Synonym 2 trigeminus · · Synonym 3 nervus trigeminus · · Synonym 4 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 f latin small letter f U+0066 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074 v latin small letter v U+0076