Definition of "delirifacient" [de•lir•i•fa•cient]

• Producing, or tending to produce, delirium. (adjective)
• Any substance that tends to cause delirium. (noun)

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• "Irregular action of the heart in a person falling asleep produces the well-known sensation of suddenly falling through space, and it seems quite possible that the combination of a delirifacient like belladonna with a drug producing irregular action of the heart like aconite might produce the sensation of flying."