stony coral

noun
a true coral consisting of numerous anthozoan polyps embedded in the calcareous material that they secrete.

Origin:
1610–20

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
stony coral
 
n
any coral of the order Madreporaria, having a calcareous skeleton, aggregations of which form reefs and islands

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Stony coral is always a great word to know.
So is ninnyhammer. Does it mean:
a fool or simpleton; ninny.
a gadget; dingus; thingumbob.
Example sentences
Twenty-eight species of stony coral are reported, and branching corals are common.
It seemed to him that there appears to be misapprehension that a stony coral genome would be the first cnidarian to be sequenced.
Marine scientists observed significant declines in stony coral cover and increases in diseases, and users perceived the decline.
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