WordReference Random House Unabridged Dictionary of American English © 2026
ru•be•fac•tion
(ro̅o̅′bə fak′shən),USA pronunciation n.
- the act or process of making red, esp. with a rubefacient.
- Medicineredness of the skin caused by a rubefacient.
- Latin rubefactus (past participle of rubefacere; see rubefacient) + -ion
- 1650–60