pumice

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pumice

 [pum´is]
a substance consisting of silicates of aluminum, potassium, and sodium; used in dentistry as an abrasive.

pum·ice

(pŭm'is),
Volcanic cinders ground to particles of varying sizes; used in dentistry for polishing restorations or teeth; an abrasive.
[L. pumex (pumic-), a pumice stone]

pumice

/pum·ice/ (pum´is) a very light, hard, rough, porous, grayish powder consisting of silicates of aluminum, potassium, and sodium; used in dentistry as an abrasive.

pumice

[pum′is]
Etymology: L, pumex
a finely divided volcanic rock used in powdered or solid form for smoothing or polishing surfaces.

pum·ice

(pŭm'is)
Volcanic cinders ground to particles of varying sizes; used in dentistry for polishing restorations or teeth; an abrasive.
[L. pumex (pumic-), a pumice stone]

pumice (pum´is),

n a type of volcanic glass used as an abrasive. It is prepared in various grits and is used for finishing and polishing in dentistry. It is also used in the polishing of natural teeth during a coronal polish but is being replaced by less abrasive synthetic particles in some polishing pastes. See also polishing, coronal.

pumice

a substance consisting of silicates of aluminum, potassium and sodium; used in dentistry as an abrasive.

pumice-stone lung
microlithiasis alveolaris pulmonum.
References in periodicals archive ?
COHERE, featuring surface porous PEEK Scoria, will be the first in a new generation of biomedical implant innovations to meet this demand.
So if not resulting from a cosmic impact, where did the scoria droplets come from?
Quatrz crystals , chromite, scoria were among the other displayed minerals.
If Nuceria as the point of disembarkation means the territory of Nuceria, rather than Nuceria Alfaterna itself, then the quarries where Habrocomes laboured need not be specifically associated with Montagna Spaccata (mentioned above), but could also refer more generally to quarrying in the area, which has recently been discovered to have yielded volcanic scoria ('cruma di lava', lava foam) that was widely used in buildings at Rome in the second and third centuries, including the Markets of Trajan and the Pantheon.
Effects of dietary supplementation of Scoria on growth and protein digestibility in juvenile parrot fish Oplegnathus fasciatus and olive flounder Paralichthys olivaceus.
These features can be used to elegantly explain growth of scoria and spatter cones and how magma finally escapes laterally to form lava flows.
The team examined the way the hats, each weighing several tons and made of red scoria were moved by Polynesians between 500 and 750 years ago.
In this way the Shino we do not know returns to us and becomes so familiar, it is us, it is the others, it is ready to let itself be mixed by younger hands, gazed at by young eyes saturated by images searching for forms free of scoria and worldly turbulence.
Introduction: Fire on The Water: an Anthology of writings and writers from Nova Scoria.
Before joining Merrill he was senior vice president at Barclays Bank and prior to Barclays he originated and structured real estate loans for the Bank of Nova Scoria.
To the south of Mt Eden, an elongate gravity high, indicating the presence of dense subsurface rocks, coincides with the location of the former Te Pouhawaiki scoria cone, which extends and narrows to the south (Affleck et al.
Scoria rocks--reserves of 613 million cubic metres are estimated in Yemen, with high porosity, low specific gravity and great strength: good fillers for lightweight aggregate and concrete blocks.