soap·stone 
(sōpstōn′)
(sōpstōn′)n.
A soft metamorphic rock composed mostly of the mineral talc. Also called steatite.
[From its smooth soapy feel.]
- photo-essay
- photo essay
- photo-essayist
- photo finish
- photoflash
- photoflood
- photofluorogram
- photofluorographic
- photofluorography
- photog
- photogelatin process
- photogene
- photogenic
- photogenically
- photogram
- photogrammetric
- photogrammetrist
- photogrammetry
- photograph
- photographable
- photographer
- photographic
- photographical
- photographically
- photography