Definition of aragonite in US English:



  • A mineral consisting of calcium carbonate, typically occurring in white seashells and as colorless prisms in deposits in hot springs.

    • ‘These two forms are called aragonite and calcite.’
    • ‘Otoliths consist of calcium carbonate, mainly in the form of aragonite, and organic matter called otoline.’
    • ‘Coral's hard parts are composed of aragonite, a form of calcium carbonate.’
    • ‘Microscopic crystals of aragonite located in the inner ears of zebrafish control balance and hearing.’
    • ‘That coating has been tentatively identified as aragonite.’


Early 19th century: from the place name Aragon + -ite.