verb (used without object)

  1. to congeal; become jellylike in consistency.
  2. to become clear, substantial, or definite; crystallize: The plan began to jell once we all met to discuss it.

verb (used with object)

  1. to cause to jell.

verb jells, jelling, jelled, gels, gelling or gelled

  1. to make or become gelatinous; congeal
  2. (intr) to assume definite formhis ideas have jelled


  1. US an informal word for jelly 1

1830, American English, probably a back-formation of jelly (v.). Related: Jelled; jelling. Figurative sense is first attested 1908. Middle English had gelen “congeal,” but it disappeared 15c.

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