Bible Encyclopedias
Certain

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

in ecclesiastical technology, is a lesser endowment for a mortuary mass, where the person was prayed for with a number of others, and not individually; the names being written all together on a board or plate above the altar.

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