Added 10 October 2026 superorder noun Categories: SocietyObscure Words noun ! Definition from WordNet 3.1, Princeton University. More about superorder at Wordnik → Where our words come from → (biology) a taxonomic group ranking above an order and below a class or subclass. Related Words: suborderminordernanordersubordogigaorderparvclassmirorderpseudoorderinfralegionsubtribesubspeciessubsection Back to today's word