ye·do·ma 
(yĕdə-mə, yə-dō-)
(yĕdə-mə, yə-dō-)n.
A type of permafrost consisting primarily of loess and organic material, believed to sequester large amounts of carbon.
[Archaic and regional Russian yedoma, backwoods, a place that lacks reindeer, yedoma, of Nenets origin; akin to Nenets yada, on foot (since the Nenets use reindeer to draw sledges and without them go on foot).]
- photodegradable
- photodiode
- photodisintegration
- photoduplicate
- photoduplication
- photodynamic
- 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