photophase

noun

pho·​to·​phase ˈfō-tə-ˌfāz How to pronounce photophase (audio)
1
: light reaction
2
: the light period of a photoperiodic cycle of light and dark

Word History

First Known Use

1944, in the meaning defined at sense 1

Time Traveler
The first known use of photophase was in 1944

Dictionary Entries Near photophase

photoperiodism

photophase

photophobe

See More Nearby Entries 

Cite this Entry

“Photophase.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/photophase. Accessed 3 Dec. 2024.

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