ara·​go·​nite | \ ə-ˈra-gə-ˌnīt How to pronounce aragonite (audio) , ˈa-rə-gə- How to pronounce aragonite (audio) , ˈer-ə-\

Definition of aragonite

: a mineral similar to calcite in consisting of calcium carbonate but differing from calcite in its orthorhombic crystallization, greater density, and less distinct cleavage

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Other Words from aragonite

aragonitic \ ə-​ˌra-​gə-​ˈni-​tik How to pronounce aragonitic (audio) , ˌer-​ə-​gə-​ , ˌa-​rə-​ \ adjective

Examples of aragonite in a Sentence

Recent Examples on the Web

Calcium carbonate, for example, which consists of one part calcium, one part carbon, and three parts oxygen, can assemble into several different minerals, including calcite and aragonite. Sophia Chen, WIRED, "New Analysis Techniques Unearth a Trove of Unusual Minerals," 1 July 2019 Through a process not yet fully understood, little balls of the material then give way to aragonite, the form of calcium carbonate that makes up a mature coral skeleton. Steph Yin, New York Times, "In Coral Skeletons, Microscopic Portraits of Resilience?," 1 June 2017 Some marine plankton and invertebrates build shells from aragonite — a form of calcium carbonate which dissolves more easily than calcite — and these organisms will be the first to feel the effect of increasing ocean acidity. Ars Technica, WIRED, "Plankton May Hold Up Well to Ocean Acidification," 31 May 2011

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'aragonite.' 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 aragonite

1801, in the meaning defined above

History and Etymology for aragonite

German Aragonit, from Aragon, Spain

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Dictionary Entries near aragonite

Arafura Sea




Aragon spar



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17 Sep 2019

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Time Traveler for aragonite

The first known use of aragonite was in 1801

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readily or continually undergoing change

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