noun, plural subphyla [suhb-fahy-luh] . Biology.
a category of related classes within a phylum.

1930–35; < Neo-Latin; see sub-, phylum

subphylar, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
subphylum (sʌbˈfaɪləm)
n , pl -la
biology a taxonomic group that is a subdivision of a phylum

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American Heritage
Medical Dictionary

subphylum sub·phy·lum (sŭb'fī'ləm)
n. pl. sub·phy·la (-lə)
A taxonomic category ranking between a phylum and a class.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
subphylum   (sŭb'fī'ləm)  Pronunciation Key 
Plural subphyla
A subdivision of a phylum of organisms. A subphylum contains one or more classes.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences for subphylum
They belong to the subphylum myriapoda which includes diplopoda, symphyla, and pauropoda.
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