CATECHUMEN
catechumen, neophyte
(noun) a new convert being taught the principles of Christianity by a catechist
Source: WordNet® 3.1
Etymology
Noun
catechumen (plural catechumens)
A convert to Christianity under instruction before baptism; a young or recent Christian preparing for confirmation.
Source: Wiktionary
Cat"e*chu`men, n. Etym: [L. catechunenus, Gr. Catechise.] (Eccl.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition