Dictionary


base'ment com"plex



Geol.
the undifferentiated assemblage of rock (base'ment rock") underlying the oldest stratified rocks in any region: usually crystalline, metamorphosed, and mostly, but not necessarily, Precambrian in age.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

basementbasement membrane

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