steradian stepwise • stercobilin · · · Info · Definitions · Synonyms · Characters · · steradian · · Text Latin · · Script 9 · · Length 4 · · Syllables Definitions · · · (noun) the unit of solid angle adopted under the Systeme International d'Unites. Synonyms: sr. · · Noun Definition 1 Synonyms · · · sr · · Synonym 1 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074