: a chiefly North American saturniid moth (Automeris io) having a large circular eyelike spot on the upper surface of each hind wing and a green larva with stinging spines

Word History


Latin Io

First Known Use

1870, in the meaning defined above

Time Traveler
The first known use of Io moth was in 1870

Dictionary Entries Near Io moth

Cite this Entry

“Io moth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Io%20moth. Accessed 27 May. 2024.

Kids Definition

Io moth

: a large North American moth with a large eyelike spot on each yellowish hind wing
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