1. A form or a book of instruction by means of question and answer.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• catachism,
• chatechism,
• catecism,
• catchism,
• catechims,
• catacism,
• catachist,
• cathechism,
• catechize,
• catechises,
• katechise,
• catachise,
• catechsm,
• catechist,
• notechiss,
• catechic,
• cattelism,
• catechisme,
• catechoo,
• catichise

• catechismal,
• catechesis,
• catechist,
• catechise,
• catechistic,
• catechize.

The adjective form of the word "catechism" is "catechetical".

The plural of the "catechism" can be the "catechisms".

The singular of the "catechism" can be the "catechism".