photoyoudaoicibaDictYouDict[photo 词源字典]
photo: [19] Greek phōs meant ‘light’ (it was related to Sanskrit bhā- ‘shine’). Its stem form phōto- was used by the astronomer Sir John Herschel in 1839 to coin the term photograph, based on the Greek element -graphos ‘writing’, and perhaps inspired by a parallel German formation photographie which had appeared a little earlier the same year. The word’s living connection with the concept ‘light’ has now been virtually severed, but it still flourishes in, for example, photoelectric [19], photometer [18], photon [20], and photosynthesis [19].
=> phosphorus, photon[photo etymology, photo origin, 英语词源]
photo-youdaoicibaDictYouDict
word-forming element meaning "light" or "photographic" or "photoelectric," from Greek photo-, comb. form of phos (genitive photos) "light," from PIE root *bha- (1) "to shine" (see phantasm).