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Definition of: quartan
(kwôr′tən) adjective
Pertaining to the fourth in a series; especially, occurring every fourth day.
—noun Pathol. A malarial fever caused by the parasite Plasmodium malariae in which the paroxysms recur every fourth day, or 72 hours, reckoning inclusively. [<F quartaine <L quartanus <quartus fourth]
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