Source : Webster's Revised Unabridged Dictionary (1913)

Delirifacient \De*lir`i*fa"cient\, a. [Delirium + L. faciens,
   -entis, p. pr. of facere to make.] (Med.)
   Producing, or tending to produce, delirium. -- n. Any
   substance which tends to cause delirium.