- phototherapy
- phototonus
- phototoxic
- phototransistor
- phototroph
- phototropism
- phototube
- phototypesetter
- phototypesetting
- phototypographies
- phototypography
- photovoltaic
- photovoltaic cell
- photo–essay
- photo–offset
- photo–realism
- phots
- phr.
- phragmites
- phrasal verb
- phrase
- phrase book
- phrased
- phrasemaker
- phrase marker