: a crystalline stable organometallic coordination compound (C5H5)2Fe
also : an analogous compound with a heavy metal (such as chromium)

Word History

Etymology

ferro- + cycl- + -ene

First Known Use

1952, in the meaning defined above

Time Traveler
The first known use of ferrocene was in 1952

Browse Nearby Words

Cite this Entry

“Ferrocene.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ferrocene. Accessed 30 Jul. 2026.

More from Merriam-Webster on ferrocene

Love words? Need even more definitions?

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

More from Merriam-Webster