Chironex(redirected from Chironex fleckeri)
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one of the four genera in the family Chirodropsidae, the box jellyfish.
a poisonous, stinging jellyfish which may weigh 4 to 7 lb and measure 6 to 7 inches across and 8 inches deep. These animals possess a remarkable stinging device and a most potent, agonizingly painful and rapidly lethal poison.