Definitions from Wiktionary (SiAl)

▸ 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.
▸ noun:  a clan in the Punjab region of the Indian subcontinent.
▸ noun:  (geology) Alternative form of sial [(geology) The rocks rich in silicon and aluminum that form the upper layer of the earth's crust, which lies beneath all continental landmasses.]
▸ Also see sial


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