Etymology

placoderm

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Today it means: A member of an extinct paraphyletic class (†Placodermi) of jawed fish with armored heads and thoraces; the group lived during the Silurian and Devonian periods. Full definition →

First used 19th c.German Placoderm
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The story

  1. German · derived fromPlacoderm
  2. English todayplacoderm

From placo- + -derm, after German Placoderm.

First known use, by meaning

  • from 19th c. A member of an extinct paraphyletic class (†Placodermi) of jawed fish with armored heads and thoraces; the group lived during the Silurian and Devonian periods.
  • from 19th c. Pertaining to the paraphyletic class †Placodermi.

Etymology from Wiktionary, CC BY-SA 4.0.