1. (verb)clear, clear up, shed light on, crystallize, crystallise, crystalize, crystalise, straighten out, sort out, enlighten, illuminate, elucidate make free from confusion or ambiguity; make clear "Could you clarify these remarks?"; "Clear up the question of who is at fault"
2. (verb)crystallize, crystallise, crystalize, crystalise cause to form crystals or assume crystalline form "crystallize minerals"
3. (verb)crystallize, crystallise, crystalise, crystalize cause to take on a definite and clear shape "He tried to crystallize his thoughts"