| Subclass (n.) One of the natural groups, more important than an order, into which some classes are divided; as, the angiospermous subclass of exogens. Thesaurus Entries biotype, branch, class, family, genotype, genus, kingdom, order, phylum, section, series, species, subfamily, subgenus, subkingdom, suborder, subspecies, subtribe, superclass, superfamily, superorder, superspecies, tribe, variety |