English Explanatory Dictionary

photo-

English dictionary entry

Meanings

prefix
  1. light, electromagnetic radiation
  2. photography

Pronunciation

/foʊtoʊ/

Word forms

photo- phot-

Etymology

Etymology tree Proto-Indo-European *bʰeh₂- Proto-Indo-European *bʰéh₂os Proto-Hellenic *pʰáwos Ancient Greek φᾰ́ος (phắos) Ancient Greek φῶς (phôs) Ancient Greek φωτο- (phōto-)der. English photo- From Ancient Greek φωτο- (phōto-), the combining form of φῶς (phôs, “light”).

Derived words

photo photoabsorption photoacoustic photoacoustics photoactive photoaddition photoaffinity photoaging photoalidade photoallergy photoautotroph photoautotrophic photobiology photobiont photobiotic photobleach photocatalysis photocatalyst photocathode photocell photochemical photochemistry photochromic photochromism photoclinometer photoclinometry photocoagulation photocoagulator photocompose photocomposition photoconduction photoconductive photoconductivity photoconductor photocopier photocopy photocoupler photocurrent photodarlington photodecomposition photodegradable photodegradation photodetachment photodetector photodevice photodichroic photodiffusion photodimerization photodiode photodisintegration photodissociation photodosimetry photodraft photodrama photoduplicate photodynamic photodynamics photoecology photoelastic photoelasticity
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