| Suborder (n.) A division of an order; a group of genera of a little lower rank than an order and of greater importance than a tribe or family; as, cichoraceous plants form a suborder of Compositae. Thesaurus Entries biotype, blood, bracket, branch, caste, category, clan, class, division, estate, family, genotype, genus, grade, group, grouping, head, heading, kin, kingdom, label, level, order, phylum, pigeonhole, position, predicament, race, rank, rating, rubric, section, sept, series, set, species, station, status, strain, stratum, subclass, subdivision, subfamily, subgenus, subgroup, subkingdom, subspecies, subtribe, superclass, superfamily, superorder, superspecies, title, tribe, variety |