The Collaborative International Dictionary
Liquefacient
Liquefacient \Liq`ue*fa"cient\ (l[i^]k`w[-e]*f[=a]"shent), n.
That which serves to liquefy.
(Med.) An agent, as mercury, iodine, etc., which promotes the liquefying processes of the system, and increases the secretions.
Wiktionary
liquefacient
n. 1 That which serves to liquefy. 2 (context medicine obsolete English) Any agent, such as mercury, iodine, etc., that promotes the liquefying processes of the system, and increases the secretions.