1. Physical Chemistry. a semirigid colloidal dispersion of a solid with a liquid or gas, as jelly, glue, etc.
2. Theater. gelatin (def 5).
3. Biochemistry. a semirigid polymer, as agarose, starch, cellulose acetate, or polyacrylamide, cast into slabs or cylinders for the electrophoretic separation of proteins and nucleic acids. verb (used without object), gelled, gelling.
4. to form or become a gel.
5. jell (def 2).
"hairs can be gelled."
"planes can be gelled."
"albums can be gelled."
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