superorder

noun

A taxonomic category of related organisms ranking below a class or its subdivisions and above an order.

noun

In natural history, a classificatory group next above the order but below the class. It may be a combination of orders, or a single order contrasting with such a combination; it is not well distinguished from subclass.

noun

A group intermediate in importance between an order and a subclass.

noun

A taxonomic category below subclass and above order.

noun

(biology) a taxonomic group ranking above an order and below a class or subclass