pitch·stone 
(pĭchstōn′)
(pĭchstōn′)n.
Any of various volcanic glasses distinguished by their dull pitchlike luster.
[Translation of German Pechstein.]
- parameterization
- parameterize
- parametric
- parametrical
- parametrically
- parametric equalizer
- parametrize
- paramilitary
- paramnesia
- paramo
- paramorph
- paramorphic
- paramorphine
- paramorphism
- paramorphous
- paramount
- paramountcy
- paramountly
- paramour
- paramylon
- paramylum
- paramyxovirus
- Paranaíba
- paraneoplastic
- parang