catabolism

[kuh-tab-uh-liz-uhm]
noun Biology, Physiology.
destructive metabolism; the breaking down in living organisms of more complex substances into simpler ones, with the release of energy (opposed to anabolism ).

Origin:
1875–80; < Greek katabol() a throwing down (kata- cata- + bolḗ a throw; compare katabállein to throw down) + -ism

catabolic [kat-uh-bol-ik] , adjective
catabolically, adverb
hypercatabolism, noun
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World English Dictionary
catabolism or katabolism (kəˈtæbəˌlɪzəm)
 
n
Compare anabolism a metabolic process in which complex molecules are broken down into simple ones with the release of energy; destructive metabolism
 
[C19 katabolism, from Greek katabolē a throwing down, from kataballein, from kata- down + ballein to throw]
 
katabolism or katabolism
 
n
 
[C19 katabolism, from Greek katabolē a throwing down, from kataballein, from kata- down + ballein to throw]
 
catabolic or katabolism
 
adj
 
katabolic or katabolism
 
adj
 
cata'bolically or katabolism
 
adv
 
kata'bolically or katabolism
 
adv

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

catabolism
1876, "destructive metabolism," from Gk. katabole "a throwing down," from kataballein "to throw down," from kata- "down" + ballein "to throw" (see ballistics).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

catabolism ca·tab·o·lism (kə-tāb'ə-lĭz'əm)
n.
The metabolic breakdown of complex molecules into simpler ones, often resulting in a release of energy.


cat'a·bol'ic (kāt'ə-bŏl'ĭk) 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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American Heritage
Science Dictionary
catabolism   (kə-tāb'ə-lĭz'əm)  Pronunciation Key 
The phase of metabolism in which energy, in the form of ATP, is produced by the breakdown of complex molecules, such as starches, proteins and fats, into simpler ones. Compare anabolism.

catabolic adjective
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

catabolism definition


Biochemical reactions that break down molecules in metabolism. Molecules may be broken down to gain their energy or to prepare them for disposal from the body. (Compare anabolism.)

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 Britannica
Encyclopedia

catabolism

the sequences of enzyme-catalyzed reactions by which relatively large molecules in living cells are broken down, or degraded. Part of the chemical energy released during catabolic processes is conserved in the form of energy-rich compounds (e.g., adenosine triphosphate [ATP]).

Learn more about catabolism with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences for catabolism
Catabolism is the metabolic reaction cells undergo in order to extract energy.
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