Crystallize (verb)

1. To form into crystals.
2. To solidify and take on a definite shape or form.
3. To become clear or precise.

Origin:

From latin crystallus, meaning crystal.

Examples:

1. The salt crystals formed as the water evaporated.
2. The solution crystallized as it cooled.
3. The idea crystallized in her mind as she was thinking.
4. The liquid crystallized into a solid.
5. His thoughts crystallized into a plan.