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Dictionary


sub•grade



Pronunciation: (sub'grād"), [key] Civ. Engin., Building Trades.

n.
the prepared earth surface on which a pavement or the ballast of a railroad track is placed or upon which the foundation of a structure is built.

adj.
beneath the finished ground level of a project.

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

subglacialsubgroup

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