placoderm

plac·o·derm

P p

Transcription

- US Pronunciation
- US IPA
- [plak-uh-durm]
- /ˈplæk əˌdɜrm/

- US Pronunciation
- US IPA
- [plak-uh-durm]
- /ˈplæk əˌdɜrm/

Definitions of placoderm word

noun placoderm any of various extinct jawed fishes of the class Placodermi, dominant in seas and rivers during the Devonian Period and characterized by bony armored plates on the head and upper trunk. 1
noun placoderm any extinct bony-plated fishlike vertebrate of the class Placodermi, of Silurian to Permian times: thought to have been the earliest vertebrates with jaws 0

See all 2 definitions of placoderm

Information block about the term

Origin of placoderm

First appearance:

before 1855

One of the 30% newest English words

1855-60; < New Latin Placodermi name of the class, plural of placodermus, equivalent to placo- (< Greek; see placoid, -o-) + -dermus -derm

Historical Comparancy

Parts of speech for Placoderm

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

Full grammatical hierarchy of Placoderm

placoderm popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 55% of English native speakers know the meaning and use word.

According to our data about 65% of words is more used. This is a rare but used term. It occurs in the pages of specialized literature and in the speech of educated people.

placoderm usage trend in Literature

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