oncolite
[ ŏn′kə-līt′ ]
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A stromatolite that is spherical rather than dome-shaped. Oncolites usually form around a nucleus consisting of a detrital fragment (such as a shell fragment or a grain of sand) and are less than 10 cm (3.9 inches) in diameter.
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Words nearby oncolite
onco-, oncogene, oncogenesis, oncogenic, oncogenicity, oncolite, oncology, oncoming, on commission, on condition that, on consignment
The American Heritage® Science Dictionary
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