oolith

American  

[oh-uh-lith] / ˈoʊ ə lɪθ /

noun

Geology.

1. any of the component concretions of a piece of oolite.

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oolith British  

/ ˈəʊəˌlɪθ /

noun

1. any of the tiny spherical grains of sedimentary rock of which oolite is composed

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oolith Scientific  

/ ō′ə-līt′ /

1. A small, round grain consisting of calcium carbonate, silica, or dolomite. Ooliths have concentric layers that form around a nucleus, such as a shell fragment, a sand grain, or a pellet of alga. They typically have diameters of 0.25 to 2 mm. Ooliths usually form by inorganic precipitation.

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Etymology

Origin of oolith

First recorded in 1780–90; oo- + -lith