Added 9 October 2026 acanthodean noun Categories: Obscure Words noun ! Definition from Wiktionary (CC BY-SA). More about acanthodean at Wordnik → Where our words come from → Alternative form of acanthodian. adjective Alternative form of acanthodian. Related Words: acanthodianacanthopteranacanthodidacanthopterictenacanthacanthoptacanthomorphacantharianacanthopterygianzooanthidacanthareanacanthodiform Back to today's word