ruminant

[roo-muh-nuhnt]
noun
1.
any even-toed, hoofed mammal of the suborder Ruminantia, being comprised of cloven-hoofed, cud-chewing quadrupeds, and including, besides domestic cattle, bison, buffalo, deer, antelopes, giraffes, camels, and chevrotains.
adjective
2.
ruminating; chewing the cud.
3.
contemplative; meditative: a ruminant scholar.

Origin:
1655–65; < Latin rūminant- (stem of rūmināns, present participle of rūminārī, rūmināre to chew cud, meditate), equivalent to rūmin- (stem of rūmen) rumen + -ant- -ant

ruminantly, adverb
nonruminant, noun, adjective
unruminant, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
ruminant (ˈruːmɪnənt)
 
n
1.  any artiodactyl mammal of the suborder Ruminantia, the members of which chew the cud and have a stomach of four compartments, one of which is the rumen. The group includes deer, antelopes, cattle, sheep, and goats
2.  any other animal that chews the cud, such as a camel
 
adj
3.  of, relating to, or belonging to the suborder Ruminantia
4.  (of members of this suborder and related animals, such as camels) chewing the cud; ruminating
5.  meditating or contemplating in a slow quiet way

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

ruminant
1661, from L. ruminantem (nom. ruminans), prp. of ruminare "to chew the cud" (see ruminate).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

ruminant ru·mi·nant (rōō'mə-nənt)
n.
Any of various hoofed, even-toed, usually horned mammals of the suborder Ruminantia, such as cattle, sheep, goats, deer, and giraffes, characteristically having a stomach divided into four compartments and chewing a cud consisting of regurgitated, partially digested food.

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
ruminant   (r'mə-nənt)  Pronunciation Key 
Any of various even-toed hoofed mammals of the suborder Ruminantia. Ruminants usually have a stomach divided into four compartments (called the rumen, reticulum, omasum, and abomasum), and chew a cud consisting of regurgitated, partially digested food. Ruminants include cattle, sheep, goats, deer, giraffes, antelopes, and camels.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Some farmers deliberately or accidentally give their cows ruminant feed.
Equipment used by rendering plants processes both ruminant and nonruminant feed, which can mix.
Ruminant livestock such as cattle and sheep are the largest source of methane emissions resulting from human activity.
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