pumicite
/ˈpʌmɪsʌɪt/Geology
noun
A volcanic ash with a composition similar to pumice but deposited as powder or granules, widely used in the manufacture of lightweight concrete and for its abrasive properties; unconsolidated volcanic ash.
Origin
Early 20th century. From pumice + -ite. Perhaps compare French pumicite pumice.
- astern
- asteroid
- asteroidal
- Asteroidea
- asteroseismological
- asteroseismologist
- asteroseismology
- as/that was
- as the case may be
- as the crow flies
- asthenia
- asthenic
- asthenosphere
- asthenospheric
- (as) thick as a brick
- (as) thick as poundies
- (as) thick as thieves
- (as) thick as two (short) planks (or as a plank)
- (as) thin as a rake
- asthma
- asthmatic
- asthmatically
- Asti
- a sticky wicket
- a stiff upper lip