Breadcrumb Home > Thesaurus > S Synonyms of spicule Find synonyms for: Noun 1. spicule, spiculum, process, outgrowth, appendage usage: small pointed structure serving as a skeletal element in various marine and freshwater invertebrates e.g. sponges and corals WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of spicule (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: genome Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language