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[per-uh-nee-uh m] /ˌpɛr əˈni əm/
noun, plural perinea
[per-uh-nee-uh] /ˌpɛr əˈni ə/ (Show IPA).
the area in front of the anus extending to the fourchette of the vulva in the female and to the scrotum in the male.
the diamond-shaped area corresponding to the outlet of the pelvis, containing the anus and vulva or the roots of the penis.
Origin of perineum
1625-35; < New Latin < Greek períneon, períneos, perínaios, apparently equivalent to per(i)- peri- + ine-, ina-, stems of ineîn, inân to evacuate, empty + -(i)os, -(i)on noun suffix
Related forms
perineal, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for perineal
Historical Examples
  • The actual putting on by the child of his perineal band is done afterwards without further ceremony.

    The Mafulu Robert W. Williamson
  • At Ido-ido, which is Kuni, the petticoats ceased, and there was only the perineal band.

    The Mafulu Robert W. Williamson
  • A perineal band is the only form of extension possible under these circumstances.

  • It goes without saying that the perineal region should be kept scrupulously clean.

    Benign Stupors August Hoch
  • In this case the disease was believed to have originated from a perineal fistula.

  • Plate 71 shows a little girl upon whom the perineal band ceremony has just been performed.

    The Mafulu Robert W. Williamson
  • The observations as to the subsequent purification in connection with the perineal band ceremony apply to this ceremony also.

    The Mafulu Robert W. Williamson
  • The assumption of the perineal band is the subject of a ceremony which will be dealt with hereafter.

    The Mafulu Robert W. Williamson
  • For a moment he was undecided what to do, then, with an exclamation of satisfaction, he stripped himself but for a perineal band.

    Caravans By Night Harry Hervey
  • The pubic louse usually infests the hairs of the pubis and the perineal region.

    Handbook of Medical Entomology William Albert Riley
British Dictionary definitions for perineal


noun (pl) -nea (-ˈniːə)
the region of the body between the anus and the genital organs, including some of the underlying structures
the nearly diamond-shaped surface of the human trunk between the thighs
Derived Forms
perineal, adjective
Word Origin
C17: from New Latin, from Greek perinaion, from peri- + inein to empty out
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for perineal



"region of the body between the anus and the genital organs" (jocularly called a taint), early 15c., from Medieval Latin perinaeon, Late Latin perineum, from Greek perinaion, perinaios, from peri- "near" (see peri-) + inan "to carry off by evacuation," of unknown origin.

Online Etymology Dictionary, © 2010 Douglas Harper
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perineal in Medicine

perineum per·i·ne·um (pěr'ə-nē'əm)
n. pl. per·i·ne·a (-nē'ə)

  1. The portion of the body in the pelvis occupied by urogenital passages and the rectum, bounded in front by the pubic arch, in the back by the coccyx, and laterally by part of the hipbone.

  2. The region between the scrotum and the anus in males, and between the posterior vulva junction and the anus in females.

per'i·ne'al (-nē'əl) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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perineal in Science
Plural perinea
The region between the scrotum and the anus in males, and between the posterior vulva and the anus in females.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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