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cummingtonite

American  
[kuhm-ing-tuh-nahyt] / ˈkʌm ɪŋ təˌnaɪt /

noun

  1. an amphibole mineral, magnesium-iron silicate, similar in composition to anthophyllite but richer in iron.

Etymology

Origin of cummingtonite

Named after Cummington, Mass., where it is found; -ite 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.