Bible Encyclopedias
Phrontisterion

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

(φροντιστήριον , a place of meditation), a name anciently applied to denote monasteries as being places of education and schools of learning. Baptisteries were also occasionally called by this name, the catechumens being there educated in religious truth.

Bibliography Information
McClintock, John. Strong, James. Entry for 'Phrontisterion'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/​encyclopedias/​eng/​tce/​p/phrontisterion.html. Harper & Brothers. New York. 1870.