androsteronePronunciation: /ˌandrə(ʊ)ˈstɪərəʊn, anˈdrɒstərəʊn/Definition of androsterone noun [mass noun] Biochemistry a relatively inactive male sex hormone produced by metabolism of testosterone. Origin: 1930s: from andro- + sterol + -oneandrosterone in other Oxford dictionaries Definition of androsterone in the US English dictionary