ferrosoferric oxide

fer·​ro·​so·​ferric oxide | \ fə|¦rōsə, fe|+...- \

Definition of ferrosoferric 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

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!

First Known Use of ferrosoferric oxide

1825, in the meaning defined above

History and Etymology for ferrosoferric oxide

International Scientific Vocabulary ferroso- + ferric

Learn More About ferrosoferric oxide

Time Traveler for ferrosoferric oxide

Time Traveler

The first known use of ferrosoferric oxide was in 1825

See more words from the same year

Dictionary Entries Near ferrosoferric oxide


ferrosoferric oxide


See More Nearby Entries 

Statistics for ferrosoferric oxide

Cite this Entry

“Ferrosoferric oxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ferrosoferric%20oxide. Accessed 19 Jan. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Name that Thing: Flower Edition

Spell It

Can you spell these 10 commonly misspelled words?

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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