IPA: /ˌæpəˈstɒlɪk/
KK: /əˈpɑːstəˌlɪk/
Relating to the teachings or authority of the 12 Apostles, often associated with the leadership in certain Christian traditions.
The church emphasized its apostolic roots in its teachings and practices.
Apostolic → It is formed from "apostolus" (from Greek "apostolos", meaning one who is sent) and the suffix "-ic" (meaning pertaining to). The word "apostolic" refers to something that pertains to the apostles or their teachings.
Think of 'one who is sent' ('apostolus') to remember that 'apostolic' relates to the teachings and authority of the apostles.