photo-, phot-, -photic

(Greek: light; ultraviolet and infrared radiation; radiant energy)

A reference to light-induced changes in electric resistance.
photohoramotaxis, photohorotaxis
A directed response of a motile organism to color or a light pattern stimulus.
photohyponasty, photohyponastic, photohyponastically
1. Excessive growth caused by the action of light.
2. Hyponasty which is the result of exposure to intense light following an arrest of growth.
Initiated through exposure to light.
photokinesis, photokinetic
1. Movement in response to light.
2. A change in the rate of motion in response to light, as an increase or decrease in motility of bacteria with a change in illumination.
3. The change in movement or activity by an organism as a response to light.
A device for moving film at a constant speed so that a continuous record of a physiologic event may be obtained, as by a beam of light shining on the film.
Having the property of being broken down by light or by ultraviolet radiation.
photolethal (adjective), more photolethal, most photolethal
Referring to the very harmful effects of light: Can lightening be considered a photolethal form of light?
Plants and other organisms that use photosynthesis as a source of nutrition.
photolithography (s) (noun), photolithographies
The art or process of producing designs from which prints may be taken by a printing process using plates prepared from negatives: Microchips are built layer by layer on a wafer of semiconductor material of silicon by a process called photolithography which involves chemicals, gases, and light.
1. A branch of physics that deals with light or the study of light and its effects.
2. That science concerned with the production of light and energy; especially, regarding therapeutic applications.
photoluminescence (s) (noun), photoluminescences (pl)
The emission of luminous energy from a substance as a result of the absorption of electromagnetic radiation: The frequency of the photoluminescence that is emitted is lower than that which is absorbed.

In the early evening, the sea snakes appeared to glisten in the dark as a result of the photoluminescence caused by the sun.

1. The decomposition of a substance into simpler units as a result of its absorbing light; such as, the separation of hydrogen from hydrogen sulfide in water.
2, Any process in which radiant energy produces a chemical change.
1. Referring to the chemical decomposition or change by the action of light or other form of radiant energy.
2. Relating to decomposition by the influence of light upon organisms.
The sensation of seeing light flashes.

Etymologically related "light, shine, glow" word families: ethero-; fulg-; luco-; lumen-, lum-; luna, luni-; lustr-; phengo-; pheno-; phospho-; scinti-, scintill-; splendo-.