sperm whale sperm sac • sperm-whale porpoise · · · Info · Definitions · Synonyms · Characters · · sperm whale · · Text Common · · Latin · · Scripts 11 · · Length Definitions · · · (noun) large whale with a large cavity in the head containing spermaceti and oil; also a source of ambergris. Synonyms: cachalot, black whale, Physeter catodon. · · Noun Definition 1 Synonyms · · · sperm · · Synonym 1 sperm cell · · Synonym 2 spermatozoon · · Synonym 3 spermatozoan · · Synonym 4 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 h latin small letter h U+0068 l latin small letter l U+006C m latin small letter m U+006D p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 w latin small letter w U+0077