Tholeiite

//ˈθoʊ.li.aɪt// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    An igneous basaltic rock, formed from magma rich in magnesium and iron.

    "Correctly speaking, Hawaiian basalt is not just basalt, but is a special variety enriched in silica known as tholeiite."

Example

More examples

"Correctly speaking, Hawaiian basalt is not just basalt, but is a special variety enriched in silica known as tholeiite."

Etymology

From German Tholeiit, from Tholei (“a village in western Germany”).

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.