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photomicrograph
photomontage
photomosaic
photomultiplier
photon
photonegative
photonics
photonuclear
photoperiod
photoperiodism
photopheresis
photophilic
photophobia
photophobic
photophore
photophoresis
photophosphorylation
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photokinesis
pho·to·ki·ne·sis [ ftō ki nssiss, ftō kī nssiss ]


noun 
Definition:
 
movement in reaction to light: the movement of an organism when stimulated by light

pho·to·ki·net·ic [ ftō ki néttik, ftō kī néttik ] adjective
pho·to·ki·net·i·cal·ly [ ftō ki néttikəlee ] adverb
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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