pro·pane 
(prōpān′)
(prōpān′)n.
A colorless gas, C3H8, found in natural gas and petroleum and widely used as a fuel.
- sphere
- sphere of influence
- spheric
- spherical
- spherical aberration
- spherical angle
- spherical coordinate
- spherical excess
- spherical geometry
- spherically
- sphericalness
- spherical polygon
- spherical triangle
- spherical trigonometry
- sphericity
- spherics
- spherics
- spherics
- sphero-
- spheroid
- spheroidal
- spheroidally
- spheroidic
- spheroidicity
- spherometer