vitrification

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a vitrified substance;
the glassy result of being vitrified
• Derivationally related forms:
vitrify
• Hypernyms:
solid
2. the process of becoming vitreous
• Derivationally related forms:
vitrify
• Hypernyms:
natural process, natural action, action, activity