Word Study
photo-
CIDE DICTIONARY
photo-,
A combining form from Gr. fw^s , fwto`s , light ; as, photography, phototype, photometer. [1913 Webster]
OXFORD DICTIONARY
photo-, comb. form denoting:
1 light (photosensitive).
2 photography (photocomposition).
1 light (photosensitive).
2 photography (photocomposition).
Etymology
Gk phos photos light, or as abbr. of PHOTOGRAPH
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