Meaning

verb change from a liquid to a thickened or solid state

verb cause to change from a liquid to a solid or thickened state

adjective transformed from a liquid into a soft semisolid or solid mass

originFrom Middle English coagulaten (“(of blood) to clot or, make blood coagulate; (of tissue) to consolidate”), from coagulat(e) (“coagulated; (blood) clotted; (milk) curdled; (humor) thickened, viscous; (material) solidified, cohesive; (wine) boiled down, reduced”, also used as the past participle of coagulaten) + -en (verb-forming suffix), borrowed from Latin coāgulātus, the perfect passive…

Etymology from Wiktionary, CC BY-SA 3.0