Webster’s Revised Unabridged Dictionary · 1913
Gasify
Gas′i·fy, v. t. [imp. & p. p. Gasified; p. pr. & vb. n. Gasifying.] [Gas + -fy.] To convert into gas, or an aëriform fluid, as by the application of heat, or by chemical processes.
Gas′i·fy, v. i. To become gas; to pass from a liquid to a gaseous state. Scientific American.