What is a neophyte?

Neophyte (neophytoi, the newly planted, i.e. incorporated with the mystic Body of Christ), a term applied in theology to all those who have lately entered upon a new and higher state or condition of life, e.g. those who have begun the ecclesiastical life, or have joined a religious order. More particularly is it used of those who, lately converted from heathenism, have by the sacrament of Baptism, been transplanted into the higher life of the Church.

From The Catholic Encyclopedia.