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Megasecoptera

plural noun
Mega·​se·​cop·​tera

Definition of Megasecoptera

: an order of extinct insects of the Upper Carboniferous and Permian that are related to the mayflies and dragonflies and have extremely long cerci

History and Etymology for Megasecoptera

New Latin, probably from mega- + Greek sēkos pen, fold, trunk of a tree + New Latin -ptera

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