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

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 ?
Hence, periodical deep cleansing of the pumice stone in boiling water is necessary.
Key Words: Microbial contamination, Dental laboratories, Dental pumice, Dental slurry, Rag wheel, Dental prosthesis.
It's just that unless we get a pumice raft or significant seismicity next to a monitoring station, we have no idea that these eruptions are occurring.
The main material used in this work is pumice grains received from El-Nile Mining Company from the Mediterranean Sea coast at El-Arish province, North Sinai, Egypt.
By using Armstrong World Industries' waste perlite in its manufacturing process, Cathedral Cast Products no longer needs 450 tonnes of virgin pumice a year.
Pumice forms when volcanic lava cools quickly, trapping gas inside and creating lightweight rocks that can float.
The scientists suggest that the bubbles in the magma turned it into a buoyant foam that rose to the seafloor, where it turned into molten pumice 'balloons' and continued to ascend to the sea surface.
HessPozz has been used around the world in a variety of applications, ranging from down-hole well (oil/gas) cementing and precast concrete structures, to ultra-fine cementitious grout used to seal leaking dams, tunnels, sewers, and mine shafts," says Hess Pumice Vice President of Research & Development Joseph Thomas.
As far ahead as I could observe was a raft of pumice moving up and down with the swell," Lieutenant Tim Oscar told Agence France Press.
Poncebloc" is a high performance, Eco-friendly, super light-weight block produced only by OCP in Oman, manufactured with natural pumice stone having superior thermal transmittance (U-value), easy to install, naturally cool in summer and warm in winter.
GOJO CHERRY GEL PUMICE HAND CLEANER, a heavy-duty hand cleaner with pumice scrubbers, is designed to quickly clean the heaviest dirt while leaving skin feeling refreshed.
In addition to these medium to heavy-duty cleansers is a beaded & pumice based product, Rozalex Gauntlet Extra, which packs a serious punch and is ideal for removing stubborn dirt, grime, grease, oil, paints & inks.