n.
Pronunciation: ' pir- ə - ˌ d ē n
Function: noun
Etymology: pyr- + -ide + 2 -ine
Date: 1851
: a toxic water-soluble flammable liquid base C 5 H 5 N of pungent odor that is the parent of many naturally occurring organic compounds and is used as a solvent and as a denaturant for alcohol and in the manufacture of pharmaceuticals and waterproofing agents