endogenous(redirected from endogenous analgesic system)
Also found in: Dictionary, Thesaurus, Medical.
Related to endogenous analgesic system: nociceptive, endogenous pain
Biology developing or originating within an organism or part of an organism
Relating to the metabolism of nitrogenous tissue elements.
Pertaining to diseases resulting from internal causes.
Pertaining to mental disorders caused by hereditary or constitutional factors.