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urethra

[yoo-ree-thruh] /yʊˈri θrə/
noun, plural urethrae
[yoo-ree-three] /yʊˈri θri/ (Show IPA),
urethras. Anatomy
1.
the membranous tube that extends from the urinary bladder to the exterior and that in the male conveys semen as well as urine.
Origin
1625-1635
1625-35; < Late Latin < Greek ourḗthra, equivalent to ourē- (see ureter) + -thra noun suffix
Related forms
urethral, adjective
suburethral, adjective
transurethral, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for urethral

urethra

/jʊˈriːθrə/
noun (pl) -thrae (-θriː), -thras
1.
the canal that in most mammals conveys urine from the bladder out of the body. In human males it also conveys semen
Derived Forms
urethral, adjective
Word Origin
C17: via Late Latin from Greek ourēthra, from ourein to urinate
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 urethral
urethra
"canal through which urine is discharged from the bladder," 1634, from L.L. urethra, from Gk. ourethra "the passage for urine," coined by Hippocrates from ourein "to urinate," from ouron (see urine).
Online Etymology Dictionary, © 2010 Douglas Harper
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urethral in Medicine

urethra u·re·thra (yu-rē'thrə)
n. pl. u·re·thras or u·re·thrae (-thrē)
The canal through which urine is discharged from the bladder in most mammals and through which semen is discharged in the male. Also called urogenital canal.


u·re'thral 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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urethral in Science
urethra
  (y-rē'thrə)   
Plural urethras or urethrae (y-rē'thrē)
The duct through which urine passes from the bladder to the outside of the body in most mammals and some fish and birds. In males, the urethra passes through the penis and also serves as the duct for the release of sperm, which enter the urethra from the vas deferens.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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urethral in Culture
urethra [(yoo-ree-thruh)]

A tube through which urine moves from the urinary bladder out of the body. In the male, the urethra also acts as the passageway for semen.

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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Encyclopedia Article for urethral

urethra

duct that transmits urine from the bladder to the exterior of the body during urination. The urethra is held closed by the urethral sphincter, a muscular structure that helps keep urine in the bladder until voiding can occur.

Learn more about urethra with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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11
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