stupefacient Meaning, Definition & Usage

Stu`pe*fa"cient adjective
Etymology
L. stupefaciens, p.pr. of stupefacere to stupefy; stupere to be stupefied + facere to make. Cf. Stupefy.
Definitions
  1. Producing stupefaction; stupefactive. -- n. (Med.) Anything promoting stupefaction; a narcotic.

Webster 1913