nebular hypothesis nebular • nebularization · · · Info · Definitions · Characters · · nebular hypothesis · · Text Common · · Latin · · Scripts 18 · · Length 7 · · Syllables Definitions · · · (noun) (cosmology) the theory that the solar system evolved from a hot gaseous nebula. Synonyms: nebular hypothesis. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 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 p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079