[soo-per-klas, -klahs]
noun Biology.
a category of related classes within a phylum or subphylum.
a subphylum.

1890–95; super- + class Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
superclass (ˈsuːpəˌklɑːs)
a taxonomic group that is a subdivision of a subphylum

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

superclass su·per·class (sōō'pər-klās')
A taxonomic category ranking below a phylum and above 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
superclass   (s'pər-klās')  Pronunciation Key 
A taxonomic category of related organisms ranking below a phylum and containing one or more classes.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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