Pur·ga·toire River 
(pûrgə-twär′, -tôr′ē)
(pûrgə-twär′, -tôr′ē) A river, about 290 km (180 mi) long, of southeast Colorado flowing northeast to the Arkansas River.
- pyrogenic
- pyrogenicity
- pyrogenous
- pyrograph
- pyrographer
- pyrographic
- pyrography
- pyroligneous
- pyroligneous acid
- pyrolusite
- pyrolysis
- pyrolytic
- pyrolytically
- pyrolyze
- pyromancy
- pyromania
- pyromaniac
- pyromaniacal
- pyromantic
- pyrometallurgical
- pyrometallurgy
- pyrometer
- pyrometric
- pyrometrical
- pyrometrically