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[vom-it] /ˈvɒm ɪt/
verb (used without object)
to eject the contents of the stomach through the mouth; regurgitate; throw up.
to belch or spew with force or violence.
verb (used with object)
to eject from the stomach through the mouth; spew.
to cast out or eject as if in vomiting; send out forcefully or violently:
The volcano vomited flames and molten rock.
to cause (a person) to vomit.
the act of vomiting.
the matter ejected in vomiting.
Origin of vomit
late Middle English
1375-1425; late Middle English vomiten < Latin vomitāre, frequentative of vomere to discharge, vomit; akin to Greek emeîn (see emetic)
Related forms
vomiter, noun
vomitive, adjective
vomitously, adverb
unvomited, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for vomit


verb -its, -iting, -ited
to eject (the contents of the stomach) through the mouth as the result of involuntary muscular spasms of the stomach and oesophagus
to eject or be ejected forcefully; spew forth
the matter ejected in vomiting
the act of vomiting
a drug or agent that induces vomiting; emetic
Derived Forms
vomiter, noun
Word Origin
C14: from Latin vomitāre to vomit repeatedly, from vomere to vomit
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 vomit

late 14c., "act of expelling contents of the stomach through the mouth," from Latin vomitare "to vomit often," frequentative of vomere "spew forth, discharge," from PIE root *wem- "to spit, vomit" (cf. Greek emein "to vomit," emetikos "provoking sickness;" Sanskrit vamati "he vomits;" Avestan vam- "to spit;" Lithuanian vemiu "to vomit," Old Norse væma "seasickness"). In reference to the matter so ejected, it is attested from late 14c.


early 15c.; see vomit (n.). Related: Vomited; vomiting.

Online Etymology Dictionary, © 2010 Douglas Harper
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vomit in Medicine

vomit vom·it (vŏm'ĭt)
v. vom·it·ed, vom·it·ing, vom·its
To eject part or all of the stomach contents through the mouth, usually in a series of involuntary spasmic movements. n.

  1. The act or an instance of ejecting matter from the stomach through the mouth.

  2. Matter ejected from the stomach through the mouth.

  3. An emetic.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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vomit in Science
Matter ejected from the stomach through the mouth, usually as a result of involuntary muscle contractions.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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