classis

[klas-is] /ˈklæs ɪs/
noun, plural classes
[klas-eez] /ˈklæs iz/ (Show IPA)
(in certain Reformed churches)
1.
the organization of pastors and elders that governs a group of local churches; a presbytery.
2.
the group of churches governed by such an organization.
Origin
1585-95; < Latin: class
British Dictionary definitions for classis

classis

/ˈklæsɪs/
noun (in some Reformed Churches) (pl) classes (ˈklæsiːz)
1.
a governing body of elders or pastors
2.
the district or group of local churches directed by such a body
Word Origin
C16: from Latin; see class