Pronunciation: (ik-strin'sik, -zik), [key]
1. not essential or inherent; not a basic part or quality; extraneous: facts that are extrinsic to the matter under discussion.
2. being outside a thing; outward or external; operating or coming from without: extrinsic influences.
3. Anat.(of certain muscles, nerves, etc.) originating outside the anatomical limits of a part. Also,ex•trin'si•cal.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.