exotoxic ex·o·tox·ic (ěk'sō-tŏk'sĭk)
adj.
Relating to an exotoxin.
Relating to the introduction of an exogenous poison or toxin.
exotoxin ex·o·tox·in (ěk'sō-tŏk'sĭn)
n.
A toxin secreted by a microorganism and released into the environment in which it grows. Also called extracellular toxin.