: a large North American saturniid moth (Hyalophora cecropia) that is brown with red, white, and black markings

Illustration of cecropia moth

Illustration of cecropia moth

Word History

Etymology

New Latin cecropia, from Latin, feminine of Cecropius Athenian, from Greek Kekropios, from Kekrops Cecrops, legendary king of Athens

First Known Use

1885, in the meaning defined above

Time Traveler
The first known use of cecropia moth was in 1885

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Cite this Entry

“Cecropia moth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cecropia%20moth. Accessed 6 Aug. 2026.

Kids Definition

cecropia moth

noun
: a red and dark brown moth that is the largest moth of North America and has a caterpillar which spins a cocoon of coarse silk

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