Relating to or concerning adjournment; an archaic or rare term connected to the postponement of meetings or legal proceedings.
From adjourn (ad- + French jour 'day,' literally 'to postpone to another day') + -al suffix. A very rare formation from the adjournment family.
'Adjourn' originally meant to postpone to 'another day' (ad + jour), which shows how French legal vocabulary embedded itself in English law and governance centuries ago.
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