I. in-ˈsi-kli-kəl, en- adjective
Etymology: Late Latin encyclicus, from Greek enkyklios circular, general, from en in + kyklos circle — more at in , wheel
Date: 1647
: addressed to all the individuals of a group : general
II. noun
Date: 1837
: an encyclical letter ; specifically : a papal letter to the bishops of the church as a whole or to those in one country