Examples from the Web for photic
In these cases the photic stimulus produces partly chemical and partly mechanical changes.The Wonders of Life|Ernst Haeckel
The screen was set up as it had been in the other building, and everything was made ready for the operations of the photic borer.
The after-effects of photic and mechanical stimulation are similar.
I shall describe a device which gives a continuous record of photic variation for the whole day.
As might well be supposed, this work with the "photic borer," as Clewe now called his instrument, was of absorbing interest.
British Dictionary definitions for photic
Word Origin for photic
Word Origin and History for photic
1843, "pertaining to light;" 1899, "pertaining to the parts of the ocean penetrated by sunlight," from Greek phot-, comb. form of Greek phos "light" (related to phainein "to show, to bring to light;" see phantasm) + -ic.