✨📕 The NEWThe NEW Collegiate Dictionary, 12th Edition Over 5,000 words added — Buy Now! Collegiate DictionaryBuy Now!

photokinesis

noun

pho·​to·​ki·​ne·​sis ˌfō-tō-kə-ˈnē-səs How to pronounce photokinesis (audio)
-kī-
: motion or activity induced by light
photokinetic adjective

Word History

Etymology

New Latin

First Known Use

1905, in the meaning defined above

Time Traveler
The first known use of photokinesis was in 1905

Browse Nearby Words

Cite this Entry

“Photokinesis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/photokinesis. Accessed 2 Dec. 2025.

Medical Definition

photokinesis

noun
pho·​to·​ki·​ne·​sis -kə-ˈnē-səs, -kī- How to pronounce photokinesis (audio)
plural photokineses -ˈnē-ˌsēz How to pronounce photokinesis (audio)
: motion or activity induced by light
photokinetic adjective
Love words? Need even more definitions?

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