classis

Short definition from Wiktionary

Noun

1. 1
   A class or order; sort; type; kind.
2. 2
   An ecclesiastical body or judicatory in certain churches, such as the Dutch Reformed Church. It is intermediate between the consistory and the synod, and corresponds to the presbytery in the Presbyterian church.
3. 3
   A category in the classification of organisms, ranking below divisio and above ordo.