pho·to·ki·ne·sis 
(fō′tō-kə-nēsĭs, -kī-)
(fō′tō-kə-nēsĭs, -kī-)n.
Movement as a response to light.
pho′to·ki·netic (-nĕtĭk) adj.
- resourceful
- resourcefully
- resourcefulness
- resp.
- respect
- respectability
- respectable
- respectableness
- respectably
- respecter
- respectful
- respectfully
- respectfulness
- respecting
- respective
- respectively
- respectiveness
- respell
- Respighi
- respirability
- respirable
- respiration
- respirational
- respirator
- respiratory