- Ecclesiastical. a person under instruction in the rudiments of Christianity, as in the early church; a neophyte.
- a person being taught the elementary facts, principles, etc., of any subject.
- Christianity a person, esp in the early Church, undergoing instruction prior to baptism
“new convert,” 15c., from French catéchumène, from Church Latin catechumenus, from Greek katekhoumenos “one being instructed,” passive present participle of katekhein (see catechesis).