IPA: /ˈfoʊtəˌfeɪz/
KK: /ˈfoʊtəˌfeɪz/
The time during a day when there is light, typically referring to the light part of a cycle that includes both light and dark periods.
Plants use the photophase to perform photosynthesis during the day.
Photophase → It is formed from "photo-" (from Greek "phōs", meaning light) and "phase" (from Greek "phasis", meaning appearance or stage). The word "photophase" refers to a stage or period characterized by light.
Think of 'light' ('photo-') marking a specific 'stage' ('phase') — that's why photophase refers to a stage defined by light.