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