UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/əˈpɪərɪənt/US:USA pronunciation: respellingUSA pronunciation: respelling(ə pērē ənt)

WordReference Random House Unabridged Dictionary of American English © 2020
a•per•i•ent  (ə pērē ənt),USA pronunciation [Med.]
  1. Medicinehaving a mild purgative or laxative effect.

  1. Drugsa medicine or food that acts as a mild laxative. Also called  aperitive. 
  • Latin aperient- (stem of aperiēns opening, present participle of aperīre to open), equivalent. to aperi- (apparently ap-, variant of ab- ab- + -eri-) + -ent- -ent; the base -eri-, perh. with an earlier shape *wery- or *twery-, occurs only in this verb and operīre to close (see cover, operculum)
  • 1620–30

Collins Concise English Dictionary © HarperCollins Publishers::
aperient /əˈpɪərɪənt/ adj
  1. laxative
  1. a mild laxative
Etymology: 17th Century: from Latin aperīre to open
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