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ooliths' - 2 dictionary results
o·o·lite     (ō'ə-līt')  Pronunciation Key 
n.  
  1. A small round calcareous grain found, for example, in limestones.
  2. Rock, usually limestone, composed of oolites.
o'o·lit'ic (-lĭt'ĭk) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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oolith   (ō'ə-līt')  Pronunciation Key 
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.

The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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