Definition of sial in English:

sial

noun ˈsʌɪəlˈsaɪæl

mass nounGeology dated

The material of the upper or continental part of the earth's crust, characterized as relatively light and rich in silica and alumina.
Contrasted with sima
Example sentencesExamples
- A mnemonic term derived from for silica, for alumina, and for magnesium, applied as a compositional term to a layer within the Earth that occupies a position intermediate between sial and sima.
- The rocks found in the crust of the continents is called sial.

Origin

1920s: from the initial letters of silica and alumina.

Definition of sial in US English:

sial

nounˈsaɪælˈsīal

Geology dated

The material of the upper or continental part of the earth's crust, characterized as being of relatively low density and rich in silica and alumina.
Contrasted with sima
Example sentencesExamples
- The rocks found in the crust of the continents is called sial.
- A mnemonic term derived from for silica, for alumina, and for magnesium, applied as a compositional term to a layer within the Earth that occupies a position intermediate between sial and sima.

Origin

1920s: from the initial letters of silica and alumina.

单词	sial
释义	Definition of sial in English: sial noun ˈsʌɪəlˈsaɪæl mass nounGeology dated The material of the upper or continental part of the earth's crust, characterized as relatively light and rich in silica and alumina. Contrasted with sima Example sentencesExamples A mnemonic term derived from for silica, for alumina, and for magnesium, applied as a compositional term to a layer within the Earth that occupies a position intermediate between sial and sima. The rocks found in the crust of the continents is called sial. Origin 1920s: from the initial letters of silica and alumina. Definition of sial in US English: sial nounˈsaɪælˈsīal Geology dated The material of the upper or continental part of the earth's crust, characterized as being of relatively low density and rich in silica and alumina. Contrasted with sima Example sentencesExamples The rocks found in the crust of the continents is called sial. A mnemonic term derived from for silica, for alumina, and for magnesium, applied as a compositional term to a layer within the Earth that occupies a position intermediate between sial and sima. Origin 1920s: from the initial letters of silica and alumina.
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