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testis
testis or testicle , one of a pair of glands that produce the male reproductive cells, or sperm . In fetal life the testes develop in the abdomen, then descend into an external sac, the scrotum. A testis is composed of about 800 coiled seminiferous tubules whose linings contain cells that develop into sperm. These tubules merge into a larger tube called the epididymis that leads out of the testis into the vas deferens. Between the seminiferous tubules there is interstitial tissue that secretes the male sex hormone testosterone , which stimulates the development of the male reproductive system and secondary sex characteristics. Sometimes the testes do not descend normally before or shortly after birth and remain in the abdomen or groin. Such a condition requires medical attention or the gland will eventually become sterile. See also reproductive system . |
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"testis." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "testis." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1E1-testis.html "testis." The Columbia Encyclopedia, 6th ed.. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-testis.html |
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testis
testis (testicle) The reproductive organ in male animals in which spermatozoa are produced. In vertebrates there are two testes; as well as sperm, they produce steroid hormones (see androgen). In most animals the testes are within the body cavity but in mammals, although they develop within the body near the kidneys, they come to hang outside the body cavity in a scrotum. Most of the vertebrate testis is made up of a mass of seminiferous tubules, lined with Sertoli cells, in which the sperms develop (see spermatogenesis). It is connected to the outside by means of the vas deferens. See reproductive system.
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"testis." A Dictionary of Biology. 2004. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "testis." A Dictionary of Biology. 2004. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O6-testis.html "testis." A Dictionary of Biology. 2004. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-testis.html |
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testicle
tes·ti·cle / ˈtestikəl/ • n. either of the two oval organs that produce sperm in men and other male mammals, enclosed in the scrotum behind the penis. Also called testis. DERIVATIVES: tes·tic·u·lar / teˈstikyələr/ adj. |
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"testicle." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "testicle." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O999-testicle.html "testicle." The Oxford Pocket Dictionary of Current English. 2009. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-testicle.html |
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testis
testis (tes-tis) n. (pl. testes) either of the pair of male sex organs that produce spermatozoa and secrete male sex hormones (see androgen) under the control of gonadotrophins from the pituitary gland. The testes are contained within the scrotum (see reproductive system). See also spermatogenesis.
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"testis." A Dictionary of Nursing. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "testis." A Dictionary of Nursing. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O62-testis.html "testis." A Dictionary of Nursing. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-testis.html |
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testis
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"testis." World Encyclopedia. 2005. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "testis." World Encyclopedia. 2005. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O142-testis.html "testis." World Encyclopedia. 2005. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-testis.html |
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testis
testis The male gonad responsible for the production of spermatozoa. Testes are made up of semeniferous tubules in which the male gametes develop, nourished by Sertoli cells attached to the tubule walls. Interstitial cells between the tubules produce testosterone. Compare OVARY.
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MICHAEL ALLABY. "testis." A Dictionary of Zoology. 1999. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "testis." A Dictionary of Zoology. 1999. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O8-testis.html MICHAEL ALLABY. "testis." A Dictionary of Zoology. 1999. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-testis.html |
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testis
tes·tis / ˈtestis/ • n. (pl. -tes / -ˌtēz/ ) Anat. & Zool. an organ that produces spermatozoa (male reproductive cells). Compare with testicle. |
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Cite this article
"testis." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "testis." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O999-testis.html "testis." The Oxford Pocket Dictionary of Current English. 2009. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-testis.html |
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testicle
testicle (test-ikŭl) n. either of the pair of male sex organs within the scrotum. It consists of the testis and its system of ducts (the vasa efferentia and epididymis).
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Cite this article
"testicle." A Dictionary of Nursing. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "testicle." A Dictionary of Nursing. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O62-testicle.html "testicle." A Dictionary of Nursing. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-testicle.html |
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testicle
testicle XV. — L. testiculus, dim. of testis witness (the organ being evidence of virility).
So testicular XVII. |
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T. F. HOAD. "testicle." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. T. F. HOAD. "testicle." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O27-testicle.html T. F. HOAD. "testicle." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-testicle.html |
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testis
testis (anat.) TESTICLE. XVII. — L.
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Cite this article
T. F. HOAD. "testis." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. T. F. HOAD. "testis." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O27-testis.html T. F. HOAD. "testis." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-testis.html |
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testicle
testicle See testis.
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"testicle." A Dictionary of Biology. 2004. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "testicle." A Dictionary of Biology. 2004. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O6-testicle.html "testicle." A Dictionary of Biology. 2004. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-testicle.html |
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testicle
testicle
•cackle, crackle, grackle, hackle, jackal, mackle, shackle, tackle
•ankle, rankle
•Gaskell, mascle, paschal
•tabernacle • ramshackle
•débâcle, diarchal, matriarchal, monarchal, patriarchal, sparkle
•rascal
•deckle, freckle, heckle, Jekyll, shekel, speckle
•faecal (US fecal), treacle
•chicle, fickle, mickle, nickel, pickle, prickle, sickle, strickle, tickle, trickle
•besprinkle, crinkle, sprinkle, tinkle, twinkle, winkle, wrinkle
•fiscal
•laical, Pharisaical
•vehicle • stoical • cubicle • radical
•medical, paramedical
•Druidical, juridical, veridical
•syndical
•methodical, periodical, rhapsodical, synodical
•Talmudical • graphical • pontifical
•magical, tragical
•strategical
•alogical, illogical, logical
•dramaturgical, liturgical, metallurgical, surgical
•anarchical, hierarchical, monarchical, oligarchical
•psychical
•angelical, evangelical, helical
•umbilical • biblical • encyclical
•diabolical, follicle, hyperbolical, symbolical
•dynamical, hydrodynamical
•academical, agrochemical, alchemical, biochemical, chemical, petrochemical, photochemical, polemical
•inimical • rhythmical • seismical
•agronomical, anatomical, astronomical, comical, economical, gastronomical, physiognomical
•botanical, Brahmanical, mechanical, puritanical, sanicle, tyrannical
•ecumenical
•geotechnical, pyrotechnical, technical
•clinical, cynical, dominical, finical, Jacobinical, pinnacle, rabbinical
•canonical, chronicle, conical, ironical
•tunicle • pumpernickel • vernicle
•apical • epical
•atypical, prototypical, stereotypical, typical
•misanthropical, semi-tropical, subtropical, topical, tropical
•theatrical
•chimerical, clerical, hemispherical, hysterical, numerical, spherical
•calendrical
•asymmetrical, diametrical, geometrical, metrical, symmetrical, trimetrical
•electrical • ventricle
•empirical, lyrical, miracle, panegyrical, satirical
•cylindrical
•ahistorical, allegorical, categorical, historical, metaphorical, oratorical, phantasmagorical, rhetorical
•auricle • rubrical • curricle
•classical, fascicle, neoclassical
•farcical • vesicle
•indexical, lexical
•commonsensical, nonsensical
•bicycle, icicle, tricycle
•paradoxical • Popsicle • versicle
•anagrammatical, apostatical, emblematical, enigmatical, fanatical, grammatical, mathematical, piratical, prelatical, problematical, sabbatical
•impractical, practical, syntactical, tactical
•canticle
•ecclesiastical, fantastical
•article, particle
•alphabetical, arithmetical, heretical, hypothetical, metathetical, metical, parenthetical, poetical, prophetical, reticle, synthetical, theoretical
•dialectical
•conventicle, identical
•sceptical (US skeptical) • testicle
•analytical, apolitical, critical, cryptanalytical, diacritical, eremitical, geopolitical, hypercritical, hypocritical, political, socio-political, subcritical
•deistical, egoistical, logistical, mystical, papistical
•optical, synoptical
•aeronautical, nautical, vortical
•cuticle, pharmaceutical, therapeutical
•vertical • ethical • mythical • clavicle
•periwinkle • lackadaisical
•metaphysical, physical, quizzical
•whimsical • musical
•Carmichael, cervical, cycle, Michael
•unicycle • monocycle • motorcycle
•cockle, grockle
•corncockle • snorkel
•bifocal, focal, local, univocal, varifocal, vocal, yokel
•archducal, coucal, ducal, pentateuchal
•buckle, chuckle, knuckle, muckle, ruckle, suckle, truckle
•peduncle, uncle
•parbuckle • carbuncle • turnbuckle
•pinochle • furuncle • honeysuckle
•demoniacal, maniacal, megalomaniacal, paradisiacal, zodiacal
•manacle • barnacle • cenacle
•binnacle • monocle • epochal
•reciprocal
•coracle, oracle
•spectacle
•pentacle, tentacle
•receptacle • obstacle • equivocal
•circle, encircle
•semicircle
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Cite this article
"testicle." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "testicle." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O233-testicle.html "testicle." Oxford Dictionary of Rhymes. 2007. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-testicle.html |
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testis
testis
•Attis, gratis, lattice
•malpractice, practice, practise
•Atlantis, mantis
•pastis
•Lettice, lettuce, Thetis
•apprentice, compos mentis, in loco parentis, prentice
•Alcestis, testis
•poetess • armistice
•appendicitis, arthritis, bronchitis, cellulitis, colitis, conjunctivitis, cystitis, dermatitis, encephalitis, gastroenteritis, gingivitis, hepatitis, laryngitis, lymphangitis, meningitis, nephritis, neuritis, osteoarthritis, pericarditis, peritonitis, pharyngitis, sinusitis, tonsillitis
•epiglottis, glottis
•solstice
•mortise, rigor mortis
•countess • viscountess
•myosotis, notice, Otis
•poultice • justice • giantess • clematis
•Curtis • interstice • Tethys
•Glenrothes • Travis
•Jarvis, parvis
•clevis, crevice, Nevis
•Elvis, pelvis
•Avis, Davies, mavis
•Leavis • Divis • novice • Clovis
•Jervis, service
•marquess, marquis
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Cite this article
"testis." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "testis." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O233-testis.html "testis." Oxford Dictionary of Rhymes. 2007. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-testis.html |
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