English
electrorefractory
From electro- + refractory.
Formed from electro- + refractory
Proto-Indo-European *bʰreg- ‘to break’
Latin frangō ‘to break, shatter’
Latin refringō ‘to break up’
Latin refrāctus ‘broken up or open’
Latin refractārius ‘obstinate’
English refractory
Today it means
adj resistant to the heat of an electric furnace
Language periods are conventional ranges, not dates for this word.
Etymograph / electrorefractory