Etymology Explorer › English

Where does “photo-” come from?

photo- (English) comes from Ancient Greek φωτο-, from Ancient Greek φῶς, from Proto-Hellenic pʰáos, from Proto-Indo-European bʰéh₂os, from Proto-Indo-European bʰeh₂-, from Proto-Indo-European bʰeh₂-s-ri-.

photo- (English): light, electromagnetic radiation; photography

Definitions

  1. light, electromagnetic radiation; photography

Ancestry of “photo-”, step by step

StepLanguageWordMeaning
1Ancient Greekφωτο-—
2Ancient GreekφῶςAttic form of φᾰ́ος
3Proto-Hellenicpʰáos—
4Proto-Indo-Europeanbʰéh₂os—
5Proto-Indo-Europeanbʰeh₂-to shine, glow light; to speak, say
6Proto-Indo-Europeanbʰeh₂-s-ri-—

Words derived from “photo-”

  • photo
  • photograph
  • photographer
  • photon
  • photosynthesis
  • photosynthetic
  • photocopy
  • photonic
  • photovoltaic
  • photochemical
  • photodiode
  • telephoto
  • photometric
  • photoreceptor
  • photoelectric
  • photosystem
  • photoresist
  • spectrophotometer
  • photometry
  • phototherapy
  • photoperiod
  • photoelectron
  • photophobia
  • photoplay
Every word from Proto-Indo-European bʰeh₂-s-ri- →