vitrification
Concise Oxford English Dictionary © 2008 Oxford University Press:
vitrify /ˈvɪtrɪfʌɪ/
▶verb (vitrifies, vitrifying, vitrified) convert into glass or a glass-like substance, typically by exposure to heat.
– derivatives
vitrifaction /-ˈfakʃ(ə)n/ noun,
vitrifiable adjective,
vitrification /-fɪˈkeɪʃ(ə)n/ noun.
vitrifaction /-ˈfakʃ(ə)n/ noun,
vitrifiable adjective,
vitrification /-fɪˈkeɪʃ(ə)n/ noun.
– origin ME: from Fr. vitrifier or based on L. vitrum ‘glass’.
'vitrification' also found in these Oxford entries:

