Search Result for "devitrify": 
Wordnet 3.0

VERB (2)

1. become crystalline;

2. make (glassy materials) brittle or opaque; 



The Collaborative International Dictionary of English v.0.48:

Devitrify \De*vit"ri*fy\, v. t.
   To deprive of glasslike character; to take away vitreous
   luster and transparency from.
   [1913 Webster]


WordNet (r) 3.0 (2006):

devitrify
    v 1: become crystalline
    2: make (glassy materials) brittle or opaque