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English definition of “phylum”

phylum

noun [C] uk   /ˈfai.ləm/ specialized us  
a main division in a taxonomic (= scientific naming and organization system) relating to animals: Members of the largest and most diverse phylum of animals (Arthropoda), have segmented bodies and an external skeleton.Species and gendersCategories and varieties
(Definition of phylum from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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