Noun bacillariophyceae has 1 sense
  1. Bacillariophyceae, class Bacillariophyceae, Diatomophyceae, class Diatomophyceae - marine and freshwater eukaryotic algae: diatoms
    --1 is a kind of class
    --1 is a member of Chrysophyta, division Chrysophyta
    --1 has members: diatom
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