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Etymology

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Learned borrowing from Latin calcārius (of or pertaining to lime), derived from calx (lime). Similar to calcium.

Pronunciation

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Adjective

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calcareous (comparative more calcareous, superlative most calcareous)

  1. Resembling or containing calcium carbonate or limestone; chalky.
    • 1891, Thomas Hardy, Tess of the d'Urbervilles, volume 1, London: James R. Osgood, McIlvaine and Co., page 15:
      The traveller from the coast, who, after plodding northward for a score of miles over calcareous downs and corn-lands, suddenly reaches the verge of one of these escarpments[.]
    • 1957, Sidney Frederic Harmer, The Polyzoa of the Siboga Expedition, page 1106:
      Cellariiform, the orifices nearly confined to the convex frontal and lateral surfaces; the basal surface with a strong median calcareous keel, almost concealed by a flat membranous epitheca, which covers the whole zoarium []
    • 2024 March 20, Chris Howe, “High speed underneath the Chilterns...”, in RAIL, number 1005, page 33:
      Instead, the spoil will be used in part to create 127 hectares of new calcareous grassland (alkaline grassland), woodland, wood pasture, and wetland habitats.

Derived terms

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Translations

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