I. -ē-ən noun
Date: 1640
: a member of a Presbyterian church
II. adjective
Date: 1641
1. often not capitalized : characterized by a graded system of representative ecclesiastical bodies (as presbyteries) exercising legislative and judicial powers
2. : of, relating to, or constituting a Protestant Christian church that is presbyterian in government and traditionally Calvinistic in doctrine
• Pres·by·te·ri·an·ism -ē-ə-ˌni-zəm noun