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bioherm

[bahy-oh-hurm] /ˈbaɪ oʊˌhɜrm/
noun, Geology
1.
a carbonate rock formation, in the form of an ancient reef or hummock, consisting of the fossilized remains of corals, algae, mollusks, and other sedentary marine life, and commonly surrounded by rock of a different lithology.
Origin
1925-1930
1925-30; bio- + -herm < Greek hérma sunken rock, reef
Related forms
biohermal, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for bioherm

bioherm

/ˈbaɪəʊˌhɜːm/
noun
1.
a mound of material laid down by sedentary marine organisms, esp a coral reef
2.
the fossilized remains of such a mound
Word Origin
C20: from bio- + Greek herma submerged rock
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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