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Definition of ichneumon 1 : a mongoose (Herpestes ichneumon) of Africa, southern Europe, and southwestern Asia 2 : ichneumon wasp

First Known Use of ichneumon 15th century, in the meaning defined at sense 1

History and Etymology for ichneumon Middle English, from Latin, from Greek ichneumōn, literally, tracker, from ichneuein to track, from ichnos footprint

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More from Merriam-Webster on ichneumon Nglish: Translation of ichneumon for Spanish Speakers