What does defaecation mean?
Defaecation is the formal noun for the bodily process of expelling feces through the anus. It is used in medical and scientific contexts, where it describes the act itself rather than the waste or the resulting bowel movement. The word is chiefly associated with British English, while defecation is the more common spelling in American usage and in contemporary international medical writing. In everyday conversation, people more often say bowel movement, especially when discussing personal health. Defaecation can sound clinical or somewhat formal, but it is neutral rather than vulgar; bowel movement is generally the most accessible choice. The term remains useful because it names a normal physiological process precisely and without euphemism. It is also useful in medical histories, research reports, and comparisons between clinical descriptions and more colloquial language.
nounDefaecation is the process of expelling feces from the body through the anus.
- The bodily process of expelling feces through the anus.
"The clinic provided dietary advice for patients experiencing difficulty with defaecation."
"The clinic offered dietary advice to patients experiencing difficulty with defaecation."
"Her medical notes referred to routine morning defaecation without further comment."
The plural is uncommon and is used when referring to separate episodes of defaecation.
"The diary records three defaecations each day."
The unusual “ae” comes straight from Latin: defaecation descends from defaecare, built on faex, meaning “dregs” or “sediment.”
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does defaecation come from?
The English noun was borrowed from Latin defaecatio, a noun of action derived from defaecare. Latin defaecare combines the prefix de-, meaning “away,” with faex or faecis, meaning “dregs” or “sediment.” The spelling with ae reflects the Latin vowel, while faeces and fecal preserve the same root; defecation is now the more common spelling in American English.
Related word forms
How defaecation is actually used
A formal, clinical, and scientific term that is neutral rather than vulgar. It is chiefly associated with British spelling; “defecation” is more common in American usage, while “bowel movement” is the usual everyday expression.
Easily confused with defaecation
Defaecation and defecation have the same meaning; defecation is the standard spelling in American English, while defaecation is more common in British and medical usage.