1882, in the meaning defined above
“Reflex arc.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reflex%20arc. Accessed 28 Feb. 2025.
reflex arc
Britannica.com: Encyclopedia article about reflex arc
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
See Definitions and Examples »
Get Word of the Day daily email!
Share