apostolical apos·to·li·cal uncommon adjective 1. proceeding from or ordered by or subject to a pope or the papacy regarded as the successor of the Apostles “papal dispensation” Synonymspapalapostolicpontifical 2. of or relating to or deriving from the Apostles or their teachings Synonymsapostolic Related words Pertaining to ApostlePope WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.