plural noun
Phaeo·phy·ce·ae | \-fis-\

Definition of Phaeophyceae 

in some classifications

: a class comprising the brown algae and being coextensive with the division Phaeophyta

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Other Words from Phaeophyceae

phaeophycean \¦⸗⸗¦fishən \ adjective or noun
phaeophyceous \-shəs \ adjective

History and Etymology for Phaeophyceae

New Latin, from phaeo- + -phyceae

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