alumino-ferric
/əˌl(j)uːmɪnəʊˈfɛrɪk/Chemistry
adjective
Containing both aluminium and iron; specifically designating the substance alumino-ferric; relating to this substance.
noun
An impure form of aluminium sulphate containing ferric oxide, used especially as a coagulating and flocculating agent for water purification, sewage treatment, etc.
Origin
Late 19th century; earliest use found in William Crookes (1832–1919), chemist and science journalist. From alumino- + ferric, after French alumino-ferrique.