Word.ws English Dictionary

placoderm

placoderm noun: 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.

Noun

placoderm (plural placoderms)

  1. 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.
    • Out to sea are placoderms – heavily armoured fish, some of them more than six metres (twenty feet) long and equipped with massive, powerful jaws.2012, Caspar Henderson, The Book of Barely Imagined Beings, Granta Books, published 2013, page 12

Adjective

placoderm (not comparable)

  1. Pertaining to the paraphyletic class †Placodermi.
    • Research published recently on placoderm fish fossils from Scottish Devonian lakes (around 365 myo) found evidence for how this extinct group of animals copulated.2018 January 24, Elsa Panciroli, The Guardian

placoderm meaning in Tamil

placoderm in Tamil

தகடுடைத் தோலி

Forms of placoderm

pluralplacoderms

Origin of placoderm

From placo- + -derm, after German Placoderm.

Questions about placoderm

What does placoderm mean?
Placoderm 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.
What is placoderm in Tamil?
Placoderm in Tamil is தகடுடைத் தோலி. See Placoderm meaning in Tamil.
What part of speech is placoderm?
Placoderm can be a noun or an adjective.
What is the plural of placoderm?
The plural of placoderm is placoderms.

Words near placoderm in the dictionary

  1. placky
  2. placo-
  3. placochromatic
  4. placodal
  5. placode
  6. placoderm
  7. placodermian
  8. placoderms
  9. placodes
  10. placodioid
  11. placodioid lichen

Source and license

Adapted from Wiktionary: placoderm (page history and authors); placoderm (Tamil Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “placoderm.” Word.ws, https://word.ws/placoderm. Based on Wiktionary, CC BY-SA 4.0.