The Collaborative International Dictionary
Cymogene
Cymogene \Cy"mo*gene\ (s?"m?-j?n), n. (Chem.) A highly volatile liquid, condensed by cold and pressure from the first products of the distillation of petroleum; -- used for producing low temperatures.
Wiktionary
cymogene
n. (context chemistry English) A highly volatile liquid, condensed by cold and pressure from the first products of the distillation of petroleum; used for producing low temperatures.