also: ちっかほうそ
noun
boron nitride
A chemical compound of boron and nitrogen, used as a refractory material, lubricant, and in electronics.
窒化ホウ素は高温でも安定な材料として知られている。
Boron nitride is known as a material that is stable even at high temperatures.
Standard modern spelling using katakana ホウ for the element boron.
Uses the older kanji 硼 for boron; now largely replaced by the katakana form.
Compound of 窒化 (chikka, 'nitriding') + ホウ素 (hōso, 'boron'). The kanji 硼 in the older spelling is a specific character for boron, now largely replaced by katakana.