inorganic world
Refers to the non-living, mineral, or inanimate realm, often contrasted with the organic or living world.
無機界と有機界の境界は時にあいまいだ。
The boundary between the inorganic world and the organic world is sometimes ambiguous.
Compound of 無機 (muki, 'inorganic') and 界 (kai, 'world' or 'realm').