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photoresist
photorespiration
photosensitise
photosensitive
photosensitize
photosphere
photosynthesis
photosynthesize
photosystem
phototaxis
phototherapy
phototoxic
phototransistor
phototropic
phototropism
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phototube
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photopia
pho·to·pi·a [ fō tṓpee ə ]


noun 
Definition:
 
day vision: normal vision during daylight, when the activity of the cones in the retina enables the eye to perceive color

pho·to·pic [ fō tṓpik, fō tóppik ] adjective
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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