Definition of cecidium
: gall; especially : one caused by insects or mites —used especially in combinations acarocecidium zoocecidium
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Origin and Etymology of cecidium
New Latin, from Greek kēkidion, diminutive of kēkid-, kēkis anything gushing out, dye, oak gall; akin to Old English hengest stallion, Old High German hengist, Old Norse hestr, Welsh caseg mare, Lithuanian šokti to leap, dance
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