ferrosoferric oxide

noun

fer·​ro·​so·​ferric oxide

fə|¦rōsə,

fe|+…-

: a black magnetic iron oxide Fe₃O₄ found in nature as magnetite, also obtained synthetically (as from iron by heating in steam or from a ferrous salt and an alkali by precipitation and oxidation), and used chiefly as a pigment and polishing material

called also iron(II,III) oxide

Word History

Etymology

International Scientific Vocabulary ferroso- + ferric

First Known Use

1825, in the meaning defined above

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now