Solemn meeting
Easton’s Bible Dictionary & Webster’s 1828 Dictionary · Matthew George Easton, Noah Webster
Solemn meeting - (Easton's Bible Dictionary)
(Isa. 1:13), the convocation on the eighth day of the Feast of Tabernacles (Lev. 23:36; Num. 29:35, R.V., "solemn assembly;" marg., "closing festival"). It is the name given also to the convocation held on the seventh day of the Passover (Deut. 16:8).
Source of the article
Matthew George Easton, Easton’s Bible Dictionary; Noah Webster, American Dictionary of the English Language (1828)
Bible Strong combined digital edition