窒ちっ化かホウ素そalso: ちっかほうそちっかホウそじ字FuriganaMeanings1nounboron nitridechemistry›A chemical compound of boron and nitrogen, used as a refractory material, lubricant, and in electronics.窒ちっ化かホウ素そは高こう温おんでも安あん定ていな材