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bioherm

[bahy-oh-hurm]
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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 of bioherm

1925–30; bio- + -herm < Greek hérma sunken rock, reef
Related formsbi·o·her·mal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for biohermal

bioherm

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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