sial
the assemblage of rocks, rich in silica and alumina, that comprise the continental portions of the upper layer of the earth's crust.
Origin of sial
1Other words from sial
- si·al·ic, adjective
- Compare sima1.
Words Nearby sial
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use sial in a sentence
During the Mutiny of 1857 the sial leader again proved his loyalty by serving in person on the British side.
Sialogogue, sī-al′o-gog, n. a drug which increases the secretion of saliva—also sial′agogue.
British Dictionary definitions for sial
/ (ˈsaɪəl) /
the silicon-rich and aluminium-rich rocks of the earth's continental upper crust, the most abundant individual rock being granite
Origin of sial
1Derived forms of sial
- sialic (saɪˈælɪk), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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