Webster’s Revised Unabridged Dictionary · 1913
Rubefacient
Ru′be·fa′cient (rṳ′bē·fā′shent), a. [L. rubefaciens, p. pr. of rubefacere to make red; rubere to be red + facere to make.] Making red. — n. (Med.) An external application which produces redness of the skin.