oolith

[oh-uh-lith]

noun Geology.

any of the component concretions of a piece of oolite.

Origin of oolith

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

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British Dictionary definitions for oolith

oolith

noun

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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

oolith in Science

oolith

[ō′ə-līt′]

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.