pho·to·chem·is·try 
(fō′tō-kĕmĭ-strē)
(fō′tō-kĕmĭ-strē)n.
The chemistry of the effects of light on chemical systems.
pho′to·chemi·cal (-ĭ-kəl) adj.
pho′to·chemi·cal·ly adv.
- thermochemist
- thermochemistry
- thermocline
- thermocoagulation
- thermocouple
- thermoduric
- thermodynamic
- thermodynamically
- thermodynamics
- thermoelectric
- thermoelectrical
- crosstie
- cross-tolerance
- crosstown
- cross-town
- cross-train
- cross-trainer
- cross trainer
- crosstree
- cross t's
- cross up
- cross vault
- crossvine
- cross-vine
- crosswalk