gas·​tro·​lith | \ ˈga-strə-ˌlith How to pronounce gastrolith (audio) \

Definition of gastrolith

: a stone or pebble ingested by an animal and functioning to grind food in gastric digestion

Examples of gastrolith in a Sentence

Recent Examples on the Web Display cases also hold opalized freshwater crayfish gastroliths, or yabby buttons, which are found only in Lightning Ridge’s opal mines. Michelle Innis, New York Times, "An Australian Town’s Rare Mix: Dinosaur Bones and Opalized Pine Cones," 5 July 2016

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

First Known Use of gastrolith

1854, in the meaning defined above

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The first known use of gastrolith was in 1854

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Cite this Entry

“Gastrolith.” Dictionary, Merriam-Webster, Accessed 12 May. 2021.

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More Definitions for gastrolith


gas·​tro·​lith | \ ˈga-strə-ˌlith How to pronounce gastrolith (audio) \

Medical Definition of gastrolith

: a gastric calculus

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