Epistle to the Philippians epist·le·tot·hephilippians uncommon noun 1. a New Testament book containing an epistle from Saint Paul to the church at Philippi in Macedonia SynonymsEpistle of Paul the Apostle to the PhilippiansEpistle to the PhilippiansPhilippians Related words Broader terms book Parts New Testament WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.