One of the mysteries of the English language finally explained.
1In the Religious Society of Friends (Quakers): a general meeting of all the local monthly meetings of a district, held once every quarter.
2In the Methodist Church: an administrative meeting of society officials within a circuit, held once every quarter.
3Generally. A meeting which takes place once every three months.
Late 17th century; earliest use found in George Fox (1624–1691), a founder of the Religious Society of Friends (Quakers). From quarterly + meeting.
quarterly meeting/ˌkwɔːtəli ˈmiːtɪŋ/
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