A book of the Catholic and Eastern Orthodox canon of the Old Testament, considered apocryphal by Protestants.

plural of ecclesiastic

The field of study of the church.

(historical) The public legislative assembly of the Athenians. / (ecclesiastical) A church, either as a body or as a building.

plural of ecclesia

A member of the Athenian ecclesia (public legislative assembly). / (rare) A member of any ecclesia (church or other assembly).

Obsolete form of ecclesiastic.

Obsolete form of ecclesiastic.

plural of ecclesiologist

One versed in ecclesiology.