The word "Anabollsm" is commonly misspelled due to its unfamiliarity. The correct spelling is "Anabolism," pronounced [əˈnæbəˌlɪzəm]. The stress is on the second syllable - "bo" - and the first "a" is a reduced vowel [ə]. The word refers to the metabolic process by which living organisms synthesize complex molecules from simpler ones with the consumption of energy. It is often contrasted with catabolism, which is the breakdown of complex molecules into simpler ones with the release of energy.