ultrabasic
ul·tra·ba·sic
adj \ˌəl-trə-ˈbā-sik\Definition of ULTRABASIC
: 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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