Tholeiite Definition
tōlə-īt, thō-
noun
Any of a series of igneous rocks similar in composition to basalt but having more silica and iron and less aluminum.
American Heritage
Other Word Forms of Tholeiite
Noun
Singular:
tholeiitePlural:
tholeiitesOrigin of Tholeiite
After Tholei (Tholey), municipality in Saarland, Germany, where it is found
From American Heritage Dictionary of the English Language, 5th Edition
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