intrinsic

adj. inherent, innate, essential, fundamental, natural

Intrinsic describes a characteristic or property of some thing or action which is essential and specific to that thing or action, and which is wholly independent of any other object, action or consequence. A characteristic which is not essential or inherent is extrinsic.For example in biology, intrinsic effects originate from "inside" an organism or cell, such as an autoimmune disease.More specific uses of the concepts can be found:in philosophy Intrinsic and extrinsic properties (philosophy)in physics Intensive and extensive propertiesin psychology, intrinsic and extrinsic motivationin computing, intrinsic function.
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Adjective
1. belonging to a thing by its very nature; "form was treated as something intrinsic, as the very essence of the thing"- John Dewey
(synonym) intrinsical
(antonym) extrinsic
(similar) built-in, constitutional, inbuilt, inherent, integral
(see-also) essential
2. situated within or belonging solely to the organ or body part on which it acts; "intrinsic muscles"
(similar) internal
(classification) anatomy, general anatomy

(n.)
A genuine quality.
  

(a.)
Inward; internal; hence, true; genuine; real; essential; inherent; not merely apparent or accidental; -- opposed to extrinsic; as, the intrinsic value of gold or silver; the intrinsic merit of an action; the intrinsic worth or goodness of a person.
  

(a.)
Included wholly within an organ or limb, as certain groups of muscles; -- opposed to extrinsic.
  

inherent, coming from within, essential, genuine (see extrinsic).