ˌkad.əˈkēsə̇s, -atə- noun
( plural cateche·ses -ēˌsēz)
Etymology: Late Latin, from Greek katēchēsis instruction, from katēchein to teach — more at catechize
1. : oral instruction of catechumens : catechizing
2. : a discourse marked by catechesis ; especially : a formal discourse sometimes committed to writing
the catecheses of St. Cyril of Jerusalem