Definition of "ooid" []

• A small calcium carbonate or iron coated grain found on the seafloor. (noun)
• Shaped like an egg; ovoid; ovate. (adjective)

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• "Those conditions are most often found in shoals, sandbanks that create shallow water; Joulters Cay is one of the rare ooid beaches, and Andros Island pictured above has Pleistocene-epoch oolitic deposits."
• "The ooid beaches of the Bahamas are comprised of rare grains of "sand.""