1. Not contained in or belonging to a body; external; outward; unessential; opposed to intrinsic. The extrinsic aids of education and of artificial culture. (i. Taylor)
2. (Science: anatomy) Attached partly to an organ or limb and partly to some other part said of certain groups of muscles. Opposed to intrinsic.
Origin: L. Extrinsecus; exter on the outside – secus otherwise, beside; akin to E. Second: cf. F. Extrinseque. See exterior, second.