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Diatomales

plural noun
Di·​a·​to·​ma·​les | \ ˌdīətəˈmā(ˌ)lēz, (ˌ)dīˌatə-\

Definition of Diatomales

in some classifications
: an order coextensive with the class Bacillariophyceae

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History and Etymology for Diatomales

New Latin, from Diatoma + -ales

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