noun
io
EYE-oh
noun
1
A large yellow North American moth known for the eye-like spots on its hindwings.
"The io moth's bright eyespots are meant to startle predators."
name
1
One of Jupiter's largest moons, famous for its intense volcanic activity.
"Io is the most volcanically active body in the solar system."
How to Use Io
Learner’s notesIn plain EnglishUsually refers either to a spotted moth species or to one of Jupiter's moons.
Word Forms
ios plural
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The _____ moth's bright eyespots are meant to startle predators.
Etymology
From the Greek mythological figure Io, a mortal woman loved by Zeus and transformed into a heifer.