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(Greek mythology) a maiden seduced by Zeus; when Hera was about to discover them together Zeus turned her into a white heifer
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the closest of Jupiter's moons; has active volcanoes
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Initialism of input and output.
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A type of moth, the io moth.
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Abbreviation of intraosseous.
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An exclamation of joy or triumph.
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The daughter of Inachus river god, and a lover of Zeus, turned by the latter into a heifer.