crystallize /ˈkɹɪstəlaɪz/ verb5 •To make something form into crystals.I crystallized the copper sulfate by slowly cooling a saturated solution. •(figurative) To give a definite or precise form to (something).After some thought, I crystallized my ideas for the paper. •(figurative) To take a definite form.My ideas crystallized overnight. •To assume a crystalline form.The copper sulphate crystallized from solution. •To coat something with crystals, especially with sugar.We crystallized the fruit by coating in sugar. formscrystallized · crystallizing · crystallizes