SG Heritage Dictionary

Oolite [Noun] Webster's Dictionary 1828

Egg-stone, a variety of concreted carbonate of lime; oviform limestone.

Oolite [Noun] Webster's Dictionary 1913

A variety of limestone, consisting of small round grains, resembling the roe of a fish. It sometimes constitutes extensive beds, as in the European Jurassic. See the Chart of Geology.