jelly:  The central idea of ‘coagulation’ takes us back to the ultimate source of jelly, the Latin verb gelāre ‘freeze’ (which also gave English congeal ). Its feminine past participle gelāta was used in Vulgar Latin for a substance solidified out of a liquid, and this passed into Old French as gelee, meaning both ‘frost’ and ‘jelly’ – whence the English word. (Culinarily, jelly at first denoted a savoury substance, made from gelatinous parts of animals; it was not really until the early 19th century that the ancestors of modern fruit jellies began to catch on in a big way.) The Italian descendant of gelāta was gelata.
From it was formed a diminutive, gelatina, which English acquired via French as gelatine . Gel  is an abbreviation of it. => cold, congeal, gel, gelatine