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perineum

[per-uh-nee-uh m] /ˌpɛr əˈni əm/
noun, plural perinea
[per-uh-nee-uh] /ˌpɛr əˈni ə/ (Show IPA).
Anatomy
1.
the area in front of the anus extending to the fourchette of the vulva in the female and to the scrotum in the male.
2.
the diamond-shaped area corresponding to the outlet of the pelvis, containing the anus and vulva or the roots of the penis.
Origin
1625-1635
1625-35; < Neo-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
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for perinea

perineum

/ˌpɛrɪˈniːəm/
noun (pl) -nea (-ˈniːə)
1.
the region of the body between the anus and the genital organs, including some of the underlying structures
2.
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 perinea
perineum
"region of the body between the anus and the genital organs," 1632, from M.L. perinaeon, L.L. perineum (c.440), from Gk. perinaion, perinaios, from peri- "near" + inan "to carry off by evacuation," of unknown origin.
Online Etymology Dictionary, © 2010 Douglas Harper
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perinea 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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perinea in Science
perineum
  (pěr'ə-nē'əm)   
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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