1. of, relating to, or produced by light
Usage: technical/scientific
2. of or relating to the upper layer of a body of water that receives enough sunlight to support photosynthesis
Usage: biology; oceanography

Examples

• The photic zone of the ocean extends from the surface to about 200 meters deep.
• Photic stimulation can affect circadian rhythms in living organisms.
• Algae thrive in the photic layer where sunlight penetrates the water.
• The photic response of the eye involves the pupil's reaction to light.
• Marine biologists study photic conditions to understand where fish populations concentrate.