WordNet (r) 3.0 (2006):

citric acid cycle
    n 1: in all plants and animals: a series of enzymatic reactions
         in mitochondria involving oxidative metabolism of acetyl
         compounds to produce high-energy phosphate compounds that
         are the source of cellular energy [syn: Krebs cycle,
         Krebs citric acid cycle, citric acid cycle,
         tricarboxylic acid cycle]