Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A spherical stromatolite that usually forms around a fragment of detritus such as a piece of shell or a grain of sand.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geology a
spherical sedimentary structure formed bycyanobacteria
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[Greek onkos, mass; see oncology + –lite.]
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Examples
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