Subclass

n.

1.

One of the natural groups, more important than an order, into which some classes are divided; as, the angiospermous subclass of exogens.

Noun

1.

subclass - (biology) a taxonomic category below a class and above an order

subclass - derived class

biotype, branch, class, family, genotype, genus, kingdom, order, phylum, section, series, species, subfamily, subgenus, subkingdom, suborder, subspecies, subtribe, superclass, superfamily, superorder, superspecies, tribe, variety