名詞 encyclical:

1. a letter from the pope sent to all Roman Catholic bishops throughout the world
   同義詞：encyclical letter

形容詞 encyclical:

1. intended for wide distribution

en.cyc.li.cal

adj.（形容詞）
Intended for general or wide circulation.
廣泛傳送的：意在普遍或廣泛傳閱的
n.Roman Catholic Church （名詞）【羅馬天主教】
A papal letter addressed to the bishops of the Church or to the hierarchy of a particular country.
教諭：羅馬教皇對教會主教或特定國君主的教諭（通告）

來源：
From Late Latin encyclicus [circular]
源自 后期拉丁語 encyclicus [圓圈]
from Greek enkuklios
源自 希臘語 enkuklios
en- [in] * see en- 2
en- [在…中] *參見 en-2
kuklos [circle] * see k wel-
kuklos [圓] *參見 k wel-