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Meaning of pentameroid in English:

pentameroid

Pronunciation /pɛnˈtamərɔɪd/

adjective

  • Of or relating to the extinct superfamily Pentameroidea or family Pentameridae of articulate brachiopods having roughly pentagonal shells, known from fossils of Ordovician to Devonian age.

noun

  • A pentameroid brachiopod.

Origin

Late 19th century; earliest use found in American Cyclopedia. From scientific Latin Pentamerus + -oid.