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phylum

Definitions of phylum
  1. noun
    (biology) the major taxonomic group of animals and plants; contains classes
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    types:
    classe, groupe
    (botany) taxonomic unit of plants corresponding to a phylum
    protiste
    eukaryotic one-celled living organisms distinct from multicellular plants and animals: protozoa, slime molds, and eukaryotic algae
    thallophyte
    used only in former classifications: comprising what is now considered a heterogeneous assemblage of flowerless and seedless organisms: algae; bacteria; fungi; lichens
    thallophyte
    in former classifications: comprising plants with a vascular system including ferns and fern allies as well as seed plants
    type of:
    groupe taxonomique
    animal or plant group having natural relations
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