A usually political policy, as of a nation or an ethnic group, intended to regain lost territory or standing.
[French, from Old French revancher, to revenge : re-, re- + vengier, vencher, to avenge; see revenge.] re·vanch'ism (-vän'chĭz-əm, -väɴ'shĭz-) n., re·vanch'ist adj. & n., re·vanch·is'tic adj.