a. and sb. [ad. L. liquefacient-em, pr. pple. of liquefacĕre to LIQUEFY: see -FACIENT.] a. adj. Making liquid (Syd. Soc. Lex., 1889). b. sb. Something that serves to liquefy; spec. in Med., an agent (such as mercury and iodine) supposed to have the power of liquefying solid deposits (Dunglison Med. Lex., 1853). Also, an agent that increases the amount of fluid secretions (Syd. Soc. Lex., 1889).