coy·pu 
(koip)
(koip)n. pl. coypu, or coy·pus
See nutria.
[American Spanish coipo, coipú, from Mapuche koypu.]
- photojournalistic
- photokinesis
- photokinetic
- photolithograph
- photolithographer
- photolithographic
- photolithographically
- photolithography
- photolysis
- photolytic
- photolytically
- photomap
- photomechanical
- photomechanically
- photometer
- photometric
- photometrical
- photometrically
- photometric brightness
- photometrist
- photometry
- photomicrograph
- photomicrographer
- photomicrographic
- photomicrography