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Definition

noun

The type of metabolism involving a sequence of degradative chemical reactions that break down complex molecules into smaller units, usually releasing energy in the process.

Supplement

For instance, large molecules such as polysaccharides, nucleic acids and proteins are broken down into smaller units such as monosaccharides, nucleotides and amino acids, respectively.

Synonym: catabolism.
Compare: constructive metabolism.
See also: metabolism.