subphylum
noun
sub·phy·lum
ˈsəb-ˌfī-ləm 
: a category in biological classification ranking below a phylum and above a class
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“Subphylum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/subphylum. Accessed 1 Jul. 2025.
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subphylum
noun
sub·phy·lum
ˈsəb-ˌfī-ləm
plural subphyla
-lə
: a category in biological classification ranking below a phylum and above a class
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