pho·to·dy·nam·ic 
(fō′tō-dī-nămĭk)
(fō′tō-dī-nămĭk)adj.
1. Of or relating to the energy of light.
2. Enhancing the effects of or inducing a toxic reaction to light, especially to ultraviolet light.
pho′to·dy·nami·cal·ly adv.
- speaking
- speaking in tongues
- speaking tube
- speak out
- speak-out
- speak up
- speak with a forked tongue
- categoric
- categorical
- categorical imperative
- categorically
- categoricalness
- categorizable
- categorization
- categorize
- category
- catena
- catenane
- catenary
- catenate
- cater
- cater-corner
- cater-cornered
- caterer
- caterpillar