penis

penis

[pee-nis]
noun, plural penises, penes [pee-neez] . Anatomy, Zoology.
the male organ of copulation and, in mammals, of urinary excretion.

Origin:
1685–95; < Latin pēnis tail, penis

penile [peen-l, pee-nahyl] , penial [pee-nee-uhl] , adjective

penal, penile.
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World English Dictionary
penis (ˈpiːnɪs)
 
n , pl -nises, -nes
the male organ of copulation in higher vertebrates, also used for urine excretion in many mammals
 
[C17: from Latin]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

penis
1676, perhaps from Fr. pénis or directly from L. penis "penis," earlier "tail" (cf. Eng. tail in both senses, the sexual one slang), from PIE *pes-/*pesos- "penis" (cf. Skt. pasas-, Gk. peos, posthe "penis," probably also O.E. fæsl "progeny, offspring," O.N. fösull, Ger. Fasel "young
of animals, brood"). The proper plural is penes. The adj. is penial. In psychological writing, penis envy is attested from 1924.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

penis pe·nis (pē'nĭs)
n. pl. pe·nis·es or pe·nes (-nēz)
The male organ of copulation and of urinary excretion, formed by three columns of erectile tissue, two arranged laterally on the dorsum and one medianly below; the extremity is formed by an expansion of the corpus spongiosum, covered by a free fold of skin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
penis   (pē'nĭs)  Pronunciation Key 
Plural penises or penes (pē'nēz)
  1. The male reproductive organ of mammals and some reptiles and birds. In mammals, the penis contains the urethra, which carries urine from the bladder and releases sperm during reproduction.

  2. A similar organ found in the males of some invertebrate animals.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

penis definition


The organ of the male reproductive system through which semen passes out of the body during sexual intercourse. The penis is also an organ of urination.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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