amphibole

noun
am·​phi·​bole | \ ˈam(p)-fə-ˌbōl How to pronounce amphibole (audio) \

Definition of amphibole

2 : any of a group of complex silicate minerals with like crystal structures that contain calcium, sodium, magnesium, aluminum, or iron ions or a combination of them

Examples of amphibole in a Sentence

Recent Examples on the Web Sodium occurs in many other minerals as well, including amphibole, zeolite and cryolite. David Bressan, Forbes, 4 July 2021 Basaltic lava has a low silica content and is composed predominantly of plagioclase, amphibole, and pyroxene. David Bressan, Forbes, 18 May 2021 The vermiculite was also filled with Libby amphibole and tons of that asbestos were released every day from Grace’s operation, coating the miners, the town and the forest. NBC News, 23 Dec. 2020 For example, a class of minerals known as amphiboles change chemistry depending on the temperature and pressure during crystallization. National Geographic, 17 July 2019

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

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First Known Use of amphibole

1802, in the meaning defined at sense 1

History and Etymology for amphibole

borrowed from French, borrowed from Greek amphíbolos "put round, attached on both sides, doubtful, ambiguous," noun derivative from the base of amphibállein "to put round, put on (clothing), encompass, be doubtful or in dispute," from amphi- amphi- + bállein "to reach by throwing, strike, put, place" — more at devil entry 1

Note: The mineral name was introduced by the French priest and mineralogist René Just Haüy (1743-1822) in Traité de minéralogie, tome 3 (Paris, 1801), pp. 58-73. Haüy so named it because it was relatively difficult to distinguish from tourmaline, "staurotide" (= staurolite), and pyroxene.

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The first known use of amphibole was in 1802

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Dictionary Entries Near amphibole

Amphibola

amphibole

amphibole group

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Cite this Entry

“Amphibole.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/amphibole. Accessed 27 Nov. 2021.

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More Definitions for amphibole

amphibole

noun
am·​phi·​bole | \ ˈam(p)-fə-ˌbōl How to pronounce amphibole (audio) \

Medical Definition of amphibole

: any of a group of complex silicate minerals with like crystal structures that contain calcium, sodium, magnesium, aluminum, and iron ions or a combination of them — see crocidolite

More from Merriam-Webster on amphibole

Britannica.com: Encyclopedia article about amphibole

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