Definition of phylum noun from the Oxford Advanced American Dictionary

 

phylum

 noun
noun
NAmE//ˈfaɪləm//
 
(pl. phyla
NAmE//ˈfaɪlə//
 
)
(biology)
 
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a group into which animals, plants, etc. are divided, smaller than a kingdom and larger than a class compare genus
See the Oxford Advanced Learner's Dictionary entry: phylum