fourth ventricle fourth stomach • fourth-year · · · Info · Definitions · Characters · · fourth ventricle · · Text Common · · Latin · · Scripts 16 · · Length 4 · · Syllables Definitions · · · (noun) an irregular ventricle between the third ventricle and the central canal of the spinal cord. Synonyms: fourth ventricle. · · Noun Definition 1 Characters · · space U+0020 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 o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075 v latin small letter v U+0076