Dictionary

ostracoderm

noun os·tra·co·derm \ˈäs-trə-kō-ˌdərm, äs-ˈtra-kə-\

Definition of OSTRACODERM

:  any of the early fossil jawless fishes of the Lower Paleozoic usually having a bony covering of plates or scales

Origin of OSTRACODERM

ultimately from Greek ostrakon + derma skin — more at derm-
First Known Use: 1891

Browse

Next Word in the Dictionary: OstracodermiPrevious Word in the Dictionary: OstracodaAll Words Near: ostracoderm
April 21, 2015
omnipotent Hear it
having unlimited authority or influence
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears