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Plaster of paris

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plaster of paris

[′plas·tər əv ′par·əs]
(inorganic chemistry)
White powder consisting essentially of the hemihydrate of calcium sulfate (CaSO4·½H2 O or 2CaSO4·H2O), produced by calcining gypsum until it is partially dehydrated; forms with water a paste that quickly sets; used for casts and molds, building materials, and surgical bandages. Also known as calcined gypsum.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Plaster of paris

A gypsum substance especially suitable for fine ornamental plasterwork because it fills a mold completely and dries quickly.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

plaster of paris, hemihydrate plaster

1. Calcined gypsum, containing no additives to control the set; a rapid-setting plaster used mainly for ornamental casting.
2. Gauging plaster.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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References in periodicals archive
(The plaster of paris hardened inside a mold that was created using the original shell.)
These patents all relate to different ways to apply a covering of plaster of Paris to a moldboard, or to methods of keeping it from drying out in use.
Cut small strips of the plaster of Paris gauze and place them into a bowl on the center of the workstation, along with a bowl of warm water.
Mix Plaster of Paris according to package directions and pour about 1-inch deep into a plastic container that is not much larger than the child's hand.
Slowly mix water into a half-cup of plaster of Paris until it becomes thick and creamy.
This adds 7,000 tonnes of plaster of Paris, 150 tonnes of iron, 150 tonnes of wood along with paints containing mercury, nickel, and cadmium, and turpentine and oil.
The new SR 20-23 can be used for finishing a wide variety of materials including wood, plastics, metals, stone, plaster of Paris and lacquered surfaces.
A GIRL had to have her fingers and thumbs amputated after burning them in plaster of Paris during an art class.
A plaster of Paris mask is made of this area, making sure to cover the area with a generous margin.
Joint compound is a simple substance containing plaster of paris, limestone and perlite.
Magnifying glass, file folder, scissors, plaster of Paris, coffee can with a plastic lid, paper clips, water, ruler
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