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1. a decline in commercial activity, prices, etc.
2. Economics another word for depression
3. a slipping of earth or rock; landslide
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
A type of landslide characterized by the downward slipping of a mass of rock or unconsolidated debris, moving as a unit or several subsidiary units, characteristically with backward rotation on a horizontal axis parallel to the slope; common on natural cliffs and banks and on the sides of artificial cuts and fills.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A measure of consistency of freshly mixed concrete, mortar, or stucco; equal to the decrease in height, measured to the nearest ¼ in. (6 mm) of the molded mass immediately after its removal from a slump cone.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.