Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
crystallise is a verb meaning "make free from confusion or ambiguity; make clear". It carries 3 recorded senses.
make free from confusion or ambiguity; make clear
“Could you clarify these remarks?”
“Clear up the question of who is at fault”
cause to form crystals or assume crystalline form
“crystallize minerals”
physics
cause to take on a definite and clear shape
“He tried to crystallize his thoughts”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for crystallise come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.