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A soft, decomposed limestone, light gray to olive in color; used in powder form as a polishing material for metal and wood.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A soft, friable limestone; in pulverized form, used for polishing soft metal surfaces and wood.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.