What does SIAL mean?

Definitions for SIAL

Here are all the possible meanings and translations of the word SIAL.

Princeton's WordNet

  1. sial(noun)

    the granitelike rocks that form the outermost layer of the earth's crust; rich in silicon and aluminum


  1. sial(Noun)

    The rocks rich in silicon and aluminum that form the upper layer of the earth's crust, which lies beneath all continental landmasses.

  2. Origin: Si (silicon) + Al (aluminium)


  1. Sial

    In geology, the sial is the upper layer of the Earth's crust made of rocks rich in silicates and aluminium minerals. It is sometimes equated with the continental crust because it is absent in the wide oceanic basins, but "sial" is a geochemical term rather than a plate tectonic term. As these elements are less dense, they tend to be concentrated in the upper layer of the crust. Geologists often refer to the rocks in this layer as felsic, because they contain high levels of feldspar, an aluminium silicate mineral series. However, the sial "actually has quite a diversity of rock types, including large amounts of basaltic rocks." The name 'sial' was taken from the first two letters of silica and of aluminium. The sial is often contrasted to the 'sima,' the next lower layer in the Earth, which is often exposed in the ocean basins; and the nickel-iron alloy core. These divisions of the Earth's interior were first proposed by Eduard Suess in the 19th century. This model of the outer layers of the earth has been confirmed by petrographic, gravimetric, and seismic evidence.

Suggested Resources

  1. SIAL

    What does SIAL stand for? -- Explore the various meanings for the SIAL acronym on the Abbreviations.com website.

Anagrams for SIAL »

  1. Lisa

  2. ails

  3. lais

  4. lias

  5. Isla

  6. sail


  1. Chaldean Numerology

    The numerical value of SIAL in Chaldean Numerology is: 8

  2. Pythagorean Numerology

    The numerical value of SIAL in Pythagorean Numerology is: 5

Images & Illustrations of SIAL


Translations for SIAL

From our Multilingual Translation Dictionary

Get even more translations for SIAL »


Find a translation for the SIAL definition in other languages:

Select another language:

Discuss these SIAL definitions with the community:

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:     


Use the citation below to add this definition to your bibliography:


"SIAL." Definitions.net. STANDS4 LLC, 2018. Web. 25 Feb. 2018. <https://www.definitions.net/definition/SIAL>.

Are we missing a good definition for SIAL? Don't keep it to yourself...

Nearby & related entries:

Alternative searches for SIAL:

Thanks for your vote! We truly appreciate your support.