To make something form into crystals
I crystallized the copper sulphate by slowly cooling a saturated solution.
To assume a crystalline form
The copper sulphate crystallized from solution.
To give something a definite or precise form
After some thought, I crystallized my ideas for the paper.
To take a definite form
My ideas crystallized overnight.
To coat something with crystals, especially with sugar
We crystallized the fruit by coating in sugar.
Having definitive and fixed form, solidified.
Being crystalline, in the form of crystals.