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hyolithid

American

[hahy-ol-i-thid] / haɪˈɒl ɪ θɪd /

noun

any invertebrate of the extinct genus Hyolithes, most common in the Cambrian Period, having a limy, univalve shell, and thought to be related to the pteropods.

adjective

belonging or pertaining to Hyolithes.

Etymology

Origin of hyolithid

< New Latin Hyolith ( es ) ( see hyoid, -lith) + -id ²

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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.