What does the word countermand mean?

Usage examples for countermand

  1. Tuesday, June 27.- Being still hopeful of achieving the pass over into the Sind, we struck camp early yesterday and marched down to Lidarwat, only to find that the party which we knew had camped there with a view to crossing, had given up the idea and retreated down the valley; so I sent a swift messenger to countermand the three days' supply of " rassad" which I had ordered from Pahlgam for my men, and we marched on to Aru. – A Holiday in the Happy Valley with Pen and Pencil by T. R. Swinburne
  2. " It has been enforced, where cargoes have been laden before the war, but where the parties have not used all possible diligence to countermand the voyage after the first notice of hostilities. – The Laws Of War, Affecting Commerce And Shipping by H. Byerley Thomson
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