Definition of Chelydra
: the type genus of Chelydridae comprising the common snapping turtles
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Origin and Etymology of chelydra
borrowed from New Latin, feminine noun formed (probably after Latin Hydra, the serpent of Greek myth) from Latin chelydrus “a venomous water snake,” borrowed from Greek chélydros “venomous water snake, kind of turtle,” from chel-, base of chélȳs “tortoise” + hýdros “the grass snake Natrix natrix” — more at chelone, hydra, otter
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