tremolite

American

[trem-uh-lahyt] / ˈtrɛm əˌlaɪt /

noun

Mineralogy.

a white or grayish variety of amphibole, Ca 2 Mg 5 Si 8 O 22 (OH) 2 , usually occurring in bladed crystals.

tremolite British

/ ˈtrɛməˌlaɪt /

noun

a white or pale green mineral of the amphibole group consisting of calcium magnesium silicate. When occurring in fibrous habit, it is used as a form of asbestos. Formula: Ca 2 (Mg,Fe) 5 Si 8 O 22 (OH) 2

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

tremolitic

adjective

Etymology

Origin of tremolite

1790–1800; named after Tremola , valley in Switzerland; see -ite ¹

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Like other claims, Lefevres cites a memo from the 1960s about the use of tremolite in the use of talc products.

From BBC • Mar. 18, 2026

Lefevres says, following scientific analysis of cosmetic talc products, the memo recommended minimising the use of tremolite until substantial evidence showed it had no adverse effects.

From BBC • Mar. 18, 2026

One internal document from 1973 allegedly says: "Our baby powder contains talc fragments classifiable as fiber. Occasionally sub-trace quantities of tremolite or actinolite are identifiable…"

From BBC • Oct. 15, 2025

Rather, he has said, it was “cleavage fragments” from non-asbestiform tremolite.

From Reuters • Dec. 14, 2018

Some fibrous specimens of tremolite and gypsum are translucent in the direction of the fibres, and practically opaque in a transverse direction.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" by Various

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