crustaceous crus·ta·ceous UK/kɹʌsˈteɪʃəs/ US/krʌˈsteɪʃʌs/ uncommon adjective 1. of or belonging to the class Crustacea Synonymscrustacean 2. being or having or resembling a hard crust or shell Related words Pertaining to crustCrustacea WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.
