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Definition of Sial
1. Noun. The granitelike rocks that form the outermost layer of the earth's crust; rich in silicon and aluminum.
Definition of Sial
1. Noun. (geology) The rocks rich in silicon and aluminum that form the upper layer of the earth's crust, which lies beneath all continental landmasses. ¹
¹ Source: wiktionary.com
Definition of Sial
1. a type of rock formation [n -S] : SIALIC [adj]
Lexicographical Neighbors of Sial
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