defecation

[ def-i-key-shuhn ]
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noun
  1. an act or instance of voiding excrement from the bowels; bowel movement:For best results, the stool sample should be tested within half an hour of defecation.

Origin of defecation

1
First recorded in 1620–30, for an earlier sense; from Latin dēfaecātiōn-, stem of dēfaecātiō “a cleansing,” from dēfaecāre “to cleanse, refine”; see defecate, -ion

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