/ˈkætəˌkızəm/ noun, pl -chisms
1 [noncount] : a collection of questions and answers that are used to teach people about the Christian religion
They went to school to learn their catechism.
He taught catechism at Sunday school.
2 [count] : a book that explains the beliefs of the Christian religion by using a list of questions and answers
Useful english dictionary. 2012.