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