anabolismPronunciation: /əˈnabəlɪz(ə)m/Definition of anabolism noun [mass noun] Biochemistry the synthesis of complex molecules in living organisms from simpler ones together with the storage of energy; constructive metabolism. Origin: late 19th century: from Greek anabolē 'ascent', from ana- 'up' + ballein 'to throw'anabolism in other Oxford dictionaries Definition of anabolism in the US English dictionary