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Dictionary


si•al



Pronunciation: (sī'al), [key]
n. Geol.
the assemblage of rocks, rich in silica and alumina, that comprise the continental portions of the upper layer of the earth's crust. Cf. sima 1.

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

Siad Barresialadenitis
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