pentremitid

I. \\| ̷ ̷ ̷ ̷|mid.ə̇d\ adjective

Etymology: New Latin Pentremitidae, family of echinoderms, from Pentremites, type genus + -idae

: of or relating to the genus Pentremites or the family Pentremitidae

II. noun (-s)

Etymology: New Latin Pentremitidae

: an echinoderm or fossil of the genus Pentremites or the family Pentremitidae