CRYSTALISE

crystallize, crystallise, crystalise, crystalize

(verb) cause to take on a definite and clear shape; “He tried to crystallize his thoughts”

crystallize, crystalize, crystalise, effloresce

(verb) assume crystalline form; become crystallized

crystallize, crystallise, crystalize, crystalise

(verb) cause to form crystals or assume crystalline form; “crystallize minerals”

clear, clear up, shed light on, crystallize, crystallise, crystalize, crystalise, straighten out, sort out, enlighten, illuminate, elucidate

(verb) make free from confusion or ambiguity; make clear; “Could you clarify these remarks?”; “Clear up the question of who is at fault”

Source: WordNet® 3.1

Verb

crystalise (third-person singular simple present crystalises, present participle crystalising, simple past and past participle crystalised)

Non-Oxford British alternative spelling of crystallize

Source: Wiktionary