Noun
English Wikipedia has an article on:botrydialWikipedia
botrydial (uncountable)
(organic chemistry) A bicyclic aldehyde, [(1S,3aR,4S,6R,7S,7aS)-1,7-diformyl-7a-hydroxy-1,3,3,6-tetramethyl-2,3a, 4,5,6,7-hexahydroinden-4-yl] acetate that is a phytotoxic sesquiterpene metabolite secreted by the fungus Botrytis cinerea