plural noun

: an order of extinct Devonian and Carboniferous ferns that is usually considered as part of or coextensive with the subclass Primofilices and that has both simple and pinnate leaves with the latter having pinnae at an angle to the plane of the leaf blade

Word History


New Latin, from coen- + Greek pterid-, pteris fern + New Latin -ales

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Dictionary Entries Near Coenopteridales

Cite this Entry

“Coenopteridales.” Dictionary, Merriam-Webster, Accessed 21 Feb. 2024.

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