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.

Source: Webster's Revised Unabridged Dictionary (1913)