-thərəˈzōə noun plural
Usage: capitalized
Etymology: New Latin, from eleuther- + -zoa
: a subphylum or other division of Echinodermata including the Asteroidea, Ophiuroidea, Echinoidea, and Holothurioidea
• eleu·ther·o·zo·an ̷ ̷| ̷ ̷ ̷ ̷ ̷ ̷|zōən adjective or noun
• eleu·ther·o·zo·ic -ōik adjective