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biostrome

[bahy-uh-strohm] /ˈbaɪ əˌstroʊm/
noun, Geology.
1.
a bedded, blanketlike sedimentary deposit of organic origin built by marine organisms and including shell beds, flat reefs, and corals.
Origin of biostrome
1930-1935
1930-35; bio- + Greek strôma layer, bed; see stroma
Related forms
biostromal, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for biostrome

biostrome

/ˈbaɪəˌstrəʊm/
noun
1.
a rock layer consisting of a deposit of organic material, such as fossils
Word Origin
C20: from bio- + Greek strōma covering
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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