day·star 
(dāstär′)
(dāstär′)n.
1. A planet, especially Venus, visible in the east just before sunrise.
2. The sun.
- photodynamically
- photodynamics
- photodynamic therapy
- photoelectric
- photoelectrical
- photoelectrically
- photoelectric cell
- photoelectric effect
- photoelectron
- photoemission
- photoemission spectroscopy
- photoengrave
- photoengraver
- photoengraving
- photo-essay
- photo essay
- photo-essayist
- photo finish
- photoflash
- photoflood
- photofluorogram
- photofluorographic
- photofluorography
- photog
- photogelatin process