'anaerobium' originates from New Latin, specifically the word 'anaerobium,' where 'an-' meant 'without,' 'aero-' meant 'air,' and '-bium' meant 'life.'

'anaerobium' was formed in modern scientific Latin to describe organisms living without air, and has been used in English scientific literature since the late 19th century.

Initially, it meant 'an organism living without air (oxygen),' and this meaning has remained consistent in modern usage.