Added 9 October 2026 acanthopteran /æˌkænˈθɑp.tə.ɹən/ noun noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about acanthopteran at Wordnik → Where our words come from → Alternative form of acanthopterygian. adjective Alternative form of acanthopterygian. Related Words: acanthopterygianacanthopteriacanthoptacanthodeanacanthomorphacanthodiformactinopterygianctenacanthacanthodianacanthodidactynopterigianacantharean Back to today's word