ferrosoferric oxide


fer·​ro·​so·​ferric oxide
: 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


International Scientific Vocabulary ferroso- + ferric

First Known Use

1825, in the meaning defined above

Time Traveler
The first known use of ferrosoferric oxide was in 1825

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near ferrosoferric oxide

Cite this Entry

“Ferrosoferric oxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ferrosoferric%20oxide. Accessed 29 May. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!