di·a·treme 
(dīə-trēm′)
(dīə-trēm′)n.
A volcanic pipe that is filled with breccia, formed by a subterranean gaseous explosion.
[Greek diatrēma, foramen (of a nerve), dugout canoe : dia-, dia- + trēma, perforation; see terə1 in the Appendix of Indo-European roots.]
- photoflash
- photoflood
- photofluorogram
- photofluorographic
- photofluorography
- photog
- photogelatin process
- photogene
- photogenic
- photogenically
- photogram
- photogrammetric
- photogrammetrist
- photogrammetry
- photograph
- photographable
- photographer
- photographic
- photographical
- photographically
- photography
- photogravure
- photoheliograph
- photojournalism
- photojournalist