per·​i·​ne·​um | \ ˌper-ə-ˈnē-əm How to pronounce perineum (audio) \
plural perinea\ ˌper-​ə-​ˈnē-​ə How to pronounce perineum (audio) \

Definition of perineum

: an area between the thighs that marks the approximate lower boundary of the pelvis and is occupied by the urinary and genital ducts and rectum also : the area between the anus and the posterior part of the external genitalia

Other Words from perineum

perineal \ ˌper-​ə-​ˈnē-​əl How to pronounce perineum (audio) \ adjective

Examples of perineum in a Sentence

Recent Examples on the Web Biotin deficiency presents with multiple symptoms including brittle nails, thinning hair and a scaly red rash around the eyes, nose, mouth and perineum. Dr. Michael Daignault, USA TODAY, 17 Feb. 2022 One company, called Morari, showed off a prototype of a perineum patch that is supposed to help those who struggle with premature ejaculation. Lauren Goode, Wired, 8 Jan. 2020 Less common were other threats; physical abuse, including refusing anesthesia for an episiotomy (a cut to the perineum to aid with delivery); or sharing private information without women’s consent., 14 Sep. 2019 Innovative firms such as EVB Sport are producing active wear specifically to support women’s perineum, pelvic floor and core muscles. The Economist, 28 June 2019 The doctor asked for permission to cut my perineum. Ellen Bass, The New Yorker, 17 June 2019 The infection that has been linked to these medications is called necrotizing fasciitis of the perineum, or Fournier’s gangrene, and the FDA is now requiring that a warning be added to the prescribing information of these pills about this risk. Korin Miller, SELF, 30 Aug. 2018 According to the Centers for Disease Control and Prevention (CDC), the painless disease causes progressive ulcerative lesions on the genitals or perineum, which are prone to heavy bleeding. Alexandria Hein, Fox News, 22 Aug. 2018 The results provide some reassurance that cycling doesn't harm the perineum any more than swimming and jogging do, said study author Dr. Benjamin Breyer, a urologic surgeon at the University of California, San Francisco. Maureen Salamon,, 19 Jan. 2018 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'perineum.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of perineum

15th century, in the meaning defined above

History and Etymology for perineum

Middle English, from Late Latin perinaion, from Greek, from peri- + inan to empty out; perhaps akin to Sanskrit iṣṇāti he sets in motion

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The first known use of perineum was in the 15th century

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Cite this Entry

“Perineum.” Dictionary, Merriam-Webster, Accessed 19 May. 2022.

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More Definitions for perineum


variants: also perinaeum \ ˌper-​ə-​ˈnē-​əm How to pronounce perineum (audio) \
plural perinea also perinaea\ -​ˈnē-​ə How to pronounce perineum (audio) \

Medical Definition of perineum

: an area of tissue that marks externally the approximate boundary of the pelvic outlet and gives passage to the urogenital ducts and rectum also : the area between the anus and the posterior part of the external genitalia especially in the female

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