1. [French Catechiste, from Old French, from Late Latin catēchista, from Late Greek katēkhistēs, from katēkhizein, to teach by word of mouth; see catechize.] cat′e·chis′tic, cat′e·chis′ti

2. A person who catechizes, especially one who instructs catechumens in preparation for admission into a Christian church. [French Catechiste, from Old French, from Late Latin catēchista, from Late Greek katēkhistēs, from katēkhizein, to teach by word of mouth; see catechize.]