The Collaborative International Dictionary
Empyreumatical
Empyreumatic \Em`py*reu*mat"ic\, Empyreumatical \Em`py*reu*mat"ic*al\, a. [Cf. F. empyreumatique.] Of or pertaining to empyreuma; as, an empyreumatic odor.
Empyreumatic oils, oils obtained by distilling various
organic substances at high temperatures.
--Brande & C.
Wiktionary
empyreumatical
a. (alternative form of empyreumatic English)