second cranial nerve second cousin • second crusade · · · Info · Definitions · Synonyms · Characters · · second cranial nerve · · Text Common · · Latin · · Scripts 20 · · Length 5 · · Syllables Definitions · · · (noun) the cranial nerve that serves the retina. Synonyms: optic nerve, nervus opticus, second cranial nerve, optic tract. · · Noun Definition 1 Synonyms · · · optic nerve · · Synonym 1 nervus opticus · · Synonym 2 optic tract · · Synonym 3 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 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 v latin small letter v U+0076