noun
activated alumina
Technical term used in chemistry and industrial contexts for porous aluminum oxide used as a desiccant, catalyst support, or adsorbent.
活性アルミナは乾燥剤としてよく使われる。
Activated alumina is often used as a desiccant.
Compound of 活性 (activity, active) and アルミナ (alumina, aluminum oxide).