The combination “the Catholic Church” (he katholike ekklesia) is found for the first time in the letter of St. Ignatius to the Smyrnaeans, written about the year 110. The word “Catholic” means “throughout the whole” or “universal.”
CHAP. VIII.–LET NOTHING BE DONE WITHOUT THE BISHOP.
See that ye all follow the bishop, even as Christ Jesus does the Father, and the presbytery as ye would the apostles. Do ye also reverence the deacons, as those that carry out[through their office] the appointment of God. Let no man do anything connected with the Church without the bishop. Let that be deemed a proper(18) Eucharist, which is[administered] either by the bishop, or by one to whom he has entrusted it. Wherever the bishop shall appear, there let the multitude[of the people] also be; by the bishop, or by one to whom he has entrusted it. Wherever the bishop shall appear, there let the multitude[of the people] also be; even as, wherever Jesus Christ is, there is the Catholic Church.
DISCLAIMER: Catholic Answers has turned over the archive to Catholic-Questions.org and no longer owns, manages, or moderates the forums. For additional apologetics resources please visit www.catholic.com.