ponor
/ˈpəʊnə/ /ˈpəʊnɔː/Physical Geography
noun
In a karstic region: a steep natural shaft which emerges at the surface of the ground, frequently as a swallow hole.
Origin
Early 20th century. From German Ponor and its etymon Serbian and Croatian ponor chasm, abyss.
- radial-ply
- radial saw
- radial sawed
- radial sawn
- radial sector
- radial shield
- radial symmetry
- radial vein
- radial velocity
- radian
- radiance
- radiancy
- radiant
- radiant efficiency
- radiant energy
- radiant flux
- electrology
- electroluminescence
- electroluminescent
- electrolysable
- electrolysation
- electrolyse
- electrolyser
- electrolysis
- electrolyte