in·trin·sic (ĭn-trĭnzĭk, -sĭk)
1. Of or relating to the essential nature of a thing; inherent.
2. Anatomy Situated within or belonging solely to the organ or body part on which it acts. Used of certain nerves and muscles.
[Middle English intrinsique, inner, from Old French intrinseque, from Late Latin intrīnsecus, inward, from Latin, inwardly; see en in the Appendix of Indo-European roots.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.