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ultrabasic

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adjective ul·tra·ba·sic \ˌəl-trə-ˈbā-sik\

Definition of ultrabasic

  1. :  extremely basic <an ultrabasic system>; specifically :  very low in silica and rich in iron and magnesium minerals <dunite and peridotite are ultrabasic rocks>

ultrabasic noun


Origin of ultrabasic

International Scientific Vocabulary


First Known Use: 1881


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