e·co·man·age·ment 
(ē′kō-mănĭj-mənt, ĕk′ō-)
(ē′kō-mănĭj-mənt, ĕk′ō-)n.
Any of various strategies to minimize or eliminate the adverse effects of human activities on the environment.
- photodecomposition
- 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