sphincter

[ sfingk-ter ]

/ ˈsfɪŋk tər /

noun Anatomy.

a circular band of voluntary or involuntary muscle that encircles an orifice of the body or one of its hollow organs.

Origin of sphincter

1570–80; <Late Latin <Greek sphinktḗr, equivalent to sphing-, base of sphíngein to hold tight + -tēr suffix denoting agent

OTHER WORDS FROM sphincter

sphinc·ter·al, sphinc·te·ri·al

[sfingk-teer-ee-uhl], /sfɪŋkˈtɪər i əl/, sphinc·ter·ic

[sfingk-ter-ik], /sfɪŋkˈtɛr ɪk/, sphinc·ter·ate

[sfingk-ter-it, -tuh-reyt], /ˈsfɪŋk tər ɪt, -təˌreɪt/, adjective

Words nearby sphincter

spherophakia, spheroplast, spherule, spherulite, sphery, sphincter, sphincteralgia, sphincterectomy, sphincterismus, sphincteritis, sphincter muscle of common bile duct

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for sphincter

The sphincter muscles cease to act, and no longer retain the contents of the body.
The Expression of Emotion in Man and Animals|Charles Darwin
The entrance into these compartments can be closed by a sphincter muscle after they are filled with water (Fig. 84).
The Anatomy of the Human Peritoneum and Abdominal Cavity|George. S. Huntington
The sphincter is kept in a state of tonic contraction by a nervous centre situated in the lumbar portion of the spinal cord.
A System of Practical Medicine By American Authors, Vol. II|Various
Besides the sphincter pupillae, the fibres of the ciliary muscle are stimulated.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4|Various

Cases in which the perineum is apparently intact, but in which the sphincter is not united (Figs. 35, 36).
A System of Operative Surgery, Volume IV (of 4)|Various

British Dictionary definitions for sphincter

sphincter

/ (ˈsfɪŋktə) /

noun

anatomy a ring of muscle surrounding the opening of a hollow organ or body and contracting to close it

Derived forms of sphincter

sphincteral, adjective

Word Origin for sphincter

C16: from Late Latin, from Greek sphinkter, from sphingein to grip tightly

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

Medical definitions for sphincter

sphincter

[ sfĭngk′tər ]

n.

A ringlike muscle that normally maintains constriction of a body passage or orifice and that relaxes as required by normal physiological functioning.anatomical sphincter

Other words from sphincter

sphinc′ter•al null adj.

Scientific definitions for sphincter

sphincter

[ sfĭngk′tər ]

A ring-shaped muscle that encircles an opening or passage in the body. The opening and closing of the anus is controlled by contraction and relaxation of a sphincter, as is the opening that leads to the stomach from the esophagus.

单词	sphincter
释义	sphincter [ sfingk-ter ] / ˈsfɪŋk tər / noun Anatomy. a circular band of voluntary or involuntary muscle that encircles an orifice of the body or one of its hollow organs. Origin of sphincter 1570–80; <Late Latin <Greek sphinktḗr, equivalent to sphing-, base of sphíngein to hold tight + -tēr suffix denoting agent OTHER WORDS FROM sphincter sphinc·ter·al, sphinc·te·ri·al [sfingk-teer-ee-uhl], /sfɪŋkˈtɪər i əl/, sphinc·ter·ic [sfingk-ter-ik], /sfɪŋkˈtɛr ɪk/, sphinc·ter·ate [sfingk-ter-it, -tuh-reyt], /ˈsfɪŋk tər ɪt, -təˌreɪt/, adjective Words nearby sphincter spherophakia, spheroplast, spherule, spherulite, sphery, sphincter, sphincteralgia, sphincterectomy, sphincterismus, sphincteritis, sphincter muscle of common bile duct Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for sphincter The sphincter muscles cease to act, and no longer retain the contents of the body. The Expression of Emotion in Man and Animals\|Charles Darwin The entrance into these compartments can be closed by a sphincter muscle after they are filled with water (Fig. 84). The Anatomy of the Human Peritoneum and Abdominal Cavity\|George. S. Huntington The sphincter is kept in a state of tonic contraction by a nervous centre situated in the lumbar portion of the spinal cord. A System of Practical Medicine By American Authors, Vol. II\|Various Besides the sphincter pupillae, the fibres of the ciliary muscle are stimulated. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4\|Various Cases in which the perineum is apparently intact, but in which the sphincter is not united (Figs. 35, 36). A System of Operative Surgery, Volume IV (of 4)\|Various British Dictionary definitions for sphincter sphincter / (ˈsfɪŋktə) / noun anatomy a ring of muscle surrounding the opening of a hollow organ or body and contracting to close it Derived forms of sphincter sphincteral, adjective Word Origin for sphincter C16: from Late Latin, from Greek sphinkter, from sphingein to grip tightly 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 Medical definitions for sphincter sphincter [ sfĭngk′tər ] n. A ringlike muscle that normally maintains constriction of a body passage or orifice and that relaxes as required by normal physiological functioning.anatomical sphincter Other words from sphincter sphinc′ter•al null adj. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for sphincter sphincter [ sfĭngk′tər ] A ring-shaped muscle that encircles an opening or passage in the body. The opening and closing of the anus is controlled by contraction and relaxation of a sphincter, as is the opening that leads to the stomach from the esophagus. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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