To cancel or reverse (a previously issued command or order).
To recall by a contrary order: countermanded the air strikes.
n.
(koun'tər-mānd')
An order or command reversing another one.
Cancellation of an order or command.
[Middle English countremaunden, from Old French contremander : contre-, counter- + mander, to command (from Latin mandāre; see man-2 in Indo-European roots).]