cry·o·scope 
(krīə-skōp′)
(krīə-skōp′)n.
An instrument used to measure the freezing point of a liquid.
- photofluorogram
- photofluorographic
- photofluorography
- photog
- photogelatin process
- photogene
- photogenic
- photogenically
- photogram
- photogrammetric
- photogrammetrist
- photogrammetry
- photograph
- photographable
- photographer
- photographic
- photographical
- photographically
- photography
- photogravure
- photoheliograph
- photojournalism
- photojournalist
- photojournalistic
- photokinesis