biostrome

[bahy-uh-strohm]

noun

Geology.

1. a bedded, blanketlike sedimentary deposit of organic origin built by marine organisms and including shell beds, flat reefs, and corals.

biostrome

/ ˈbaɪəˌstrəʊm /

noun

1. a rock layer consisting of a deposit of organic material, such as fossils

Other Word Forms

• biostromal adjective

Word History and Origins

Origin of biostrome¹

1930–35; bio- + Greek strôma layer, bed; stroma

Word History and Origins

Origin of biostrome¹

C20: from _bio- + Greek strōma covering