Meaning

noun the application of heat to change something from a liquid to a gas

noun cooking in a liquid that has been brought to a boil

verb come to the boiling point and change from a liquid to vapor

originEtymology tree Proto-Indo-European *bew-der.? Proto-Indo-European *bʰel-der.? Latin bulla Proto-Indo-European *-yétider. Latin -iō Latin bulliō Old French boillirbor. Middle English boillen English boil English -ing English boiling From boil + -ing.

Etymology from Wiktionary, CC BY-SA 3.0