Definition of catabolism in English:

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catabolism

Pronunciation: /kəˈtabəˌlizəm/

noun

Biology
The breakdown of complex molecules in living organisms to form simpler ones, together with the release of energy; destructive metabolism.
Example sentences
  • The various reactions which involve the synthesis of complex molecules can be grouped under the heading of anabolism, whereas the breakdown of complex molecules is known as catabolism.
  • During normal catabolism, protease enzymes break down carboxylase enzymes and reclaim the associated amino acids and biocytin for recycling.
  • Muscle catabolism is a hallmark of sepsis and results from accelerated breakdown of myofibrillar proteins, such as actin and myosin.

Derivatives

catabolic

Pronunciation: /ˌkadəˈbôlik/
adjective
Example sentences
  • There are thus a number of different requirements for mitochondrial metabolism, ranging from biosynthesis to catabolic processes that may or may not result in ATP synthesis.
  • During catabolic stress intracellular glutamine levels can drop more than 50 percent, and it is under these circumstances that supplemental glutamine becomes necessary.
  • Alanine and glutamine account for about 80% of the amino acids released from skeletal muscle during catabolic periods such as intense training or injury.

catabolize

Pronunciation: /kəˈtabəˌlīz/
verb
Example sentences
  • Over time, your body begins to catabolize muscle tissue, converting it to glucose for energy.
  • As a result, a bird with large glycogen stores may catabolize less protein to maintain blood glucose levels during migration than a bird with small glycogen reserves.
  • However, birds may preferentially catabolize assimilation organs to avoid catabolizing flight muscles that could impair flying ability.

Origin

Late 19th century: from Greek katabolē 'throwing down', from kata- 'down' + ballein 'to throw'.

For editors and proofreaders

Syllabification: ca·tab·o·lism

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