liquefy

verb

Etymology: From Middle English liquefien, from Anglo-Norman liquefier, from Latin liquefacere.

1. To make (something) into a liquid.

   “We’ll liquefy this rock by heating it in a furnace until it melts and flows out.”

   “Faraday succeeded in liquefying a certain number of gases by compression and refrigeration, but there still remained a number that proved absolutely refractory to the most powerful agencies; hence these gases were called permanent. […] A retired manufacturer, who at the same time is a distinguished man of science, M. Cailletet, has subdued the permanent gases, having succeeded in liquefying and solidifying them.”

2. To distort and warp (an image).
3. To become liquid.

   “The substance liquefied upon heating.”