1 ultrabasic | Definition of ultrabasic
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ultrabasic

adjective
ul·​tra·​ba·​sic | \ ˌəl-trə-ˈbā-sik How to pronounce ultrabasic (audio) \

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
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Other Words from ultrabasic

ultrabasic noun

Examples of ultrabasic in a Sentence

Recent Examples on the Web

 Rwanda has introduced ultrabasic health insurance for more than 90% of its people; infant mortality has fallen from 120 per 1,000 live births in 2000 to under 30 last year. — The Economist, "Universal health care, worldwide, is within reach," 28 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ultrabasic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of ultrabasic

1881, in the meaning defined above

History and Etymology for ultrabasic

International Scientific Vocabulary

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