recrement (n.)

"dross, scum, superfluous matter, separated from that which is useful," especially a waste product of an animal or vegetable body, 1590s, from French récrément (mid-16c.) or directly from Latin recrementum, as if from a verb *recernere, from re- (see re-) + cernere "to sift, separate" (from PIE root *krei- "to sieve," thus "discriminate, distinguish"). Related: Recremental (1570s); recrementitious.

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