PLACODERM

placoderm

(noun) fish-like vertebrate with bony plates on head and upper body; dominant in seas and rivers during the Devonian; considered the earliest vertebrate with jaws

Source: WordNet® 3.1


Etymology

Noun

placoderm (plural placoderms)

(palaeontology) A member of an extinct class (Placodermi) of jawed fish with armored heads and thoraces; the group lived during the Silurian and Devonian periods. [from 19th c.]

Adjective

placoderm (comparative more placoderm, superlative most placoderm)

(palaeontology) Pertaining to the class Placodermi. [from 19th c.]

Anagrams

• proclamed

Source: Wiktionary


Plac"o*derm, n. Etym: [Gr. (Paleon.)

Definition: One of the Placodermi.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

17 May 2025

ANTHOZOAN

(noun) sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed


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