1. (a.) Intended for circulation to many or all; general; circular; as, an encyclical letter of a council\, of a bishop, or the pope.

2. (n.) An encyclical letter, esp. one from a pope.

Pastoral Epistle aerogram air letter airgraph announcement annunciation billet-doux bull bulletin board chain letter circular communique dead letter declaration dimissorial dimissory letter drop letter edict enunciation fan letter form letter letter of credit letter of introduction letters credential letters of marque letters of request letters overt letters patent letters rogatory love letter manifesto monitory newsletter nixie notice notification open letter pastoral letter poison-pen letter position paper proclamation program programma pronouncement pronunciamento public notice report round robin statement ukase white book white paper