hubble law hubble constant • hubble parameter · · · Info · Definitions · Characters · · hubble law · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) (astronomy) the generalization that the speed of recession of distant galaxies (the red shift) is proportional to their distance from the observer. Synonyms: Hubble's law, Hubble law. · · 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 l latin small letter l U+006C u latin small letter u U+0075 w latin small letter w U+0077