metasilicic acid
A chemical compound of silicon, oxygen, and hydrogen; used in inorganic chemistry contexts.
Metasilicic acid is related to the structure of silicate minerals.
Standard chemical term spelling using katakana for メタ and kanji for ケイ酸.
Variant using the older 珪 kanji for silicon; less common in modern chemistry texts.
From メタ (meta-) + ケイ酸 (silicic acid). The prefix メタ indicates a less hydrated form of the acid.