intrinsic intrinsic /ˌɪnˈtrɪnsɪk/

adjective

1. () Belonging to a thing by its very nature  ( intrinsical , intrinsic )
   belonging to a thing by its very nature
    Form was treated as something intrinsic, as the very essence of the thing
   form was treated as something intrinsic, as the very essence of the thing
   
2. (anatomy) situated within or belonging solely to the organ or body part on which it acts  ( intrinsic )
   (anatomy) situated within or belonging solely to the organ or body part on which it acts
    Intrinsic muscles
   intrinsic muscles