photo-
US/foʊtoʊ/
photo- prefix: light, electromagnetic radiation.
Prefix
photo-
Forms of photo-
| alternative form | phot- |
|---|
Origin of photo-
From Ancient Greek φωτο- (phōto-), the combining form of φῶς (phôs, “light”).
Words formed from photo-
- 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
Questions about photo-
- What does photo- mean?
- Photo- means light, electromagnetic radiation.
- What part of speech is photo-?
- Photo- is a prefix.
- How do you pronounce photo-?
- Photo- is pronounced /foʊtoʊ/ (US).
Words near photo- in the dictionary
Source and license
Adapted from Wiktionary: photo- (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Cite this entry: “photo-.” Word.ws, https://word.ws/photo-. Based on Wiktionary, CC BY-SA 4.0.