[in.trin.sic] adj [MF intrinseque internal, fr. LL intrinsecus, fr. L, adv., inwardly; akin to L intra within--more at intra-] (1642) 1 a: belonging to the essential nature or constitution of a thing "the ~ worth of a gem" "the ~ brightness of a star" b: being or relating to a semiconductor in which the concentration of charge carriers is characteristic of the material itself instead of the content of any impurities it contains
2. a: originating or due to causes within a body, organ, or part "an ~ metabolic disease" b: originating and included wholly within an organ or part "~ muscles"--compare extrinsic 1b -- in.trin.si.cal.ly adv