Definitions for: Pyrogen

[n] any substance that can cause a rise in body temperature

Webster (1913) Definition: Pyr"o*gen, n. [See Pyrogenous.]
1. Electricity. [R.]

2. (Physiol. Chem.) A poison separable from decomposed meat
infusions, and supposed to be formed from albuminous
matter through the agency of bacteria.

Synonyms: pyrectic

See Also: matter, substance