"assume the consistence of jelly," 1869, American English, probably a back-formation of jelly (n.). Related: Jelled; jelling. Figurative sense is first attested 1908. Middle English had gelen "congeal," but it disappeared after 15c.
the liquid jelled after we added the enzyme
Jehovist
Jehu
jejune
jejunum
Jekyll and Hyde
jell
jellied
Jell-O
jelly
jellybean
jellyfish
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