spicule spiculation • spiculiferous · · · Info · Definitions · Synonyms · Characters · · spicule · · Text Latin · · Script 7 · · Length Definitions · · · (noun) small pointed structure serving as a skeletal element in various marine and freshwater invertebrates e.g. sponges and corals. Synonyms: spiculum. · · Noun Definition 1 Synonyms · · · spiculum · · Synonym 1 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C p latin small letter p U+0070 s latin small letter s U+0073 u latin small letter u U+0075