also: ほうけいさん
borosilicic acid
Technical term in chemistry. Refers to a compound containing boron, silicon, and oxygen, often in the context of glass or ceramics.
Borosilicate glass has excellent heat resistance.
Standard modern spelling using katakana for the element name and kanji for 'acid'.
Older kanji spelling using 硼 (boron) and 珪 (silicon); rarely used today.
Compound of ホウ (boron) + ケイ (silicon) + 酸 (acid). The kanji spellings 硼 and 珪 are older forms for boron and silicon, respectively.