: situated outside of a ring in a chemical structure

Word History

First Known Use

1913, in the meaning defined above

Time Traveler
The first known use of exocyclic was in 1913

Browse Nearby Words

Cite this Entry

“Exocyclic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exocyclic. Accessed 5 Mar. 2025.

Medical Definition

: situated outside of a ring in a chemical structure
Love words? Need even more definitions?

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