chrysophyta has definitions from the fields of biology,botany
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[ noun ] (biology,botany) mostly freshwater eukaryotic algae having the chlorophyll masked by brown or yellow pigment; yellow-green and golden-brown algae and diatoms: Xanthophyceae, Chrysophyceae, Bacillariophyceae; some superseded or subsumed by Heterokontophyta
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