liquefacient

[lik-wuh-fey-shuh nt] /ˌlɪk wəˈfeɪ ʃənt/
noun
1.
something that liquefies or promotes liquefaction.
Origin
1850-55; < Latin liquefacient- (stem of liquefaciēns, present participle of liquefacere to liquefy), equivalent to lique- (stem of liquēre to be liquid) + -facient -facient
British Dictionary definitions for liquefacient

liquefacient

/ˌlɪkwɪˈfeɪʃənt/
noun
1.
a substance that liquefies or causes liquefaction
adjective
2.
becoming or causing to become liquid
Word Origin
C19: from Latin liquefacere to make liquid
liquefacient in Medicine

liquefacient liq·ue·fa·cient (lĭk'wə-fā'shənt)
n.
An agent capable of causing a solid to become liquid.