Source: The Collaborative International Dictionary of English v.0.48
Catechumen \Cat"e*chu`men\, n. [L. catechumenus, Gr.
kathchoy`menos instructed, from kathchei^n. See Catechise.]
(Eccl.)
One who is receiving rudimentary instruction in the doctrines
of Christianity; a neophyte; in the primitive church, one
officially recognized as a Christian, and admitted to
instruction preliminary to admission to full membership in
the church.
[1913 Webster]