toxin Meaning, Definition & Usage

  1. noun a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species

WordNet

Tox"in, Tox"ine noun (Also<
  • Toxin
  • Toxine
)
Etymology
Gr.. See Toxic.
Definitions
  1. A poisonous product formed by pathogenic bacteria, or plants or animals , as a toxic proteid or poisonous ptomaine.

Webster 1913