devitrifyPronunciation: /diːˈvɪtrɪfʌɪ/Definition of devitrify verb (devitrifies, devitrifying, devitrified) (with reference to glass or vitreous rock) become or make hard, opaque, and crystalline: [no object]:glasses are not particularly stable materials, and in the course of time they devitrify (as adjective devitrified)bands of devitrified glassDerivatives devitrificationPronunciation: /-fɪˈkeɪʃ(ə)n/ noun devitrify in other Oxford dictionaries Definition of devitrify in the US English dictionary