sub·phy·lum
| \ ˈsəb-ˌfī-ləm
\
\
Definition of subphylum
: 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 18 Jun. 2021.
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subphylum
noun
sub·phy·lum
| \ ˈsəb-ˌfī-ləm
\
\
plural subphyla\
-lə
\
\
Medical Definition of subphylum
: a category in biological classification ranking below a phylum and above a class
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The first known use of subphylum was in 1869
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