: not involving or subjected to entrainment or resetting periodically by an environmental factor (as photoperiod)
a free-running circadian rhythm

Dictionary Entries Near free-running

Cite this Entry

“Free-running.” Medical Dictionary, Merriam-Webster, Accessed 25 Jul. 2024.

Love words? Need even more definitions?

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