stromatolite

stro mat o lite |strōˈmatəˌlīt stroʊˈmædəˌlaɪt | ▶noun a calcareous mound built up of layers of lime-secreting cyanobacteria and trapped sediment, found in Precambrian rocks as the earliest known fossils, and still being formed in lagoons in Australasia. ORIGIN 1930s: from modern Latin stroma, stromat- ‘layer, covering ’ + -lite .

stromatolite

stromatolite |strə (ʊ )ˈmatəlʌɪt | ▶noun a calcareous mound built up of layers of lime-secreting cyanobacteria and trapped sediment, found in Precambrian rocks as the earliest known fossils, and still being formed in lagoons in Australasia. ORIGIN 1930s: from modern Latin stroma, stromat- ‘layer, covering ’ + -lite .