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 ?
The Indian Textile Journal says the use of pumice stone carries some risks for manufacturers, especially wear and tear of the material.
Use a pumice stone or foot files (similar to nail files, only larger) to prevent corns and calluses from building up.
Researchers instructed the patients to apply duct tape to the affected area for six days, remove the tape, soak the area in water, rub the wart with an emery board or pumice stone, and apply new tape after 12 hours.
The dead skin covering the verruca must first be removed using a pumice stone or emery board, following which the treatment from the chemist should work.
It contains hand and nail treatment, some shower gel and a pumice stone for those rough hands.
Both models come with an inclined footbed to elevate your feet to the proper angle for maximum soaking; have a pumice stone insert to help exfoliate rough heels, calluses, etc.
After a bath or shower, file corns and calluses gently with a pumice stone.
Hamilton recommends that dancers soak their feet in the bathtub every two weeks and rub the calluses down with a pumice stone.
In recent years the mine has been given a new lease on life, thanks to the international popularity of stone-washed jeans, which are processed with white pumice stone extracted there.
If you disregard this rule, it might be necessary to clean the blade with a wire brush, or steel wool, or a pumice stone.