plural noun Bac·il·lar·i·o·phy·ce·ae \-əˈfīsēˌē, -əˈfis-\

Definition of Bacillariophyceae

  1. :  a class of yellow-green algae (division Chrysophyta) comprising the diatoms

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Origin and Etymology of bacillariophyceae

New Latin, from Bacillaria + -o- + -phyceae

First Known Use: 1931

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to criticize severely

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