shah 
(shä)
(shä)n.
Used formerly as a title for the hereditary monarch of Iran.
[Persian shāh, king, from Old Persian khshāyathiya-.]
shahdom n.
- photoresistor
- photorespiration
- photosensitive
- photosensitivity
- photosensitization
- photosensitize
- photosensitizer
- photoset
- photosetter
- photosphere
- photospheric
- photostat
- photosynthate
- photosynthesis
- photosynthesize
- photosynthetic
- photosynthetically
- phototactic
- phototactically
- phototaxis
- phototherapeutic
- phototherapy
- phototonic
- phototonus
- phototoxic