plural noun

: a large and variously delimited family of moths typically having stout bodies and broad wings often conspicuously striped or spotted, the larvae being usually hairy caterpillars see tiger moth, woolly bear

Word History


New Latin, from Arctia, type genus (from Greek arktos bear + New Latin -ia) + -idae; from the furry appearance

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Dictionary Entries Near Arctiidae

Cite this Entry

“Arctiidae.” Dictionary, Merriam-Webster, Accessed 6 Dec. 2023.

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