The Collaborative International Dictionary of English v.0.48:

Tyrotoxicon \Tyr`o*tox"i*con\, n. [NL., fr. Gr. ? cheese + ?.
   See Toxic.] (Physiol. Chem.)
   A ptomaine discovered by Vaughan in putrid cheese and other
   dairy products, and producing symptoms similar to cholera
   infantum. Chemically, it appears to be related to, or
   identical with, diazobenzol.
   [1913 Webster]