Definition of "entozoon" []

• Any of various microscopic parasitic worms previously classified together under the grouping Entozoa. (noun)

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• "An "entozoon" seems to the practical man a foolish, imaginary creature."
• "The entozoon of course gives rise to a variety of stale and melancholy jokes about the early bird, the worm that dieth not, and so forth."
• "When you know the entozoon you can dig him out and save the sheep's life."