Phototrophic

[foh-tuh-trof, -trohf] /ˈfoʊ təˌtrɒf, -ˌtroʊf/

noun, Biology.
1.
any organism that uses light as its principal source of energy.
/ˈfəʊtəʊˌtrɒf/
noun
1.
an organism that obtains energy from sunlight for the synthesis of organic compounds
phototroph
(fō’tə-trŏf’)
An organism that manufactures its own food from inorganic substances using light for energy. Green plants, certain algae, and photosynthetic bacteria are phototrophs. Also called photoautotroph.

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[foh-tuh-trop-ik, -troh-pik] /ˌfoʊ təˈtrɒp ɪk, -ˈtroʊ pɪk/ adjective, Botany. 1. growing toward or away from the light. 2. taking a particular direction under the influence of light.
Phototropism
[foh-to-truh-piz-uh m, foh-toh-troh-piz-uh m] /foʊˈtɒ trəˌpɪz əm, ˌfoʊ toʊˈtroʊ pɪz əm/ noun, Botany. 1. phototropic tendency or growth. /ˌfəʊtəʊˈtrəʊpɪzəm/ noun 1. the growth response of plant parts to the stimulus of light, producing a bending towards the light source 2. the response of animals to light; phototaxis n. 1899, from German phototropie (1892), from photo- […]

Phototropy
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Phototube
[foh-tuh-toob, -tyoob] /ˈfoʊ təˌtub, -ˌtyub/ noun, Electronics. 1. an with a photosensitive cathode, used like a photocell. /ˈfəʊtəʊˌtjuːb/ noun 1. a type of photocell in which radiation falling on a photocathode causes electrons to flow to an anode and thus produce an electric current