dé ‧ tente BrE AmE , detente /ˈdeɪtɒnt, deɪˈtɑːnt $ deɪˈtɑːnt/ noun [uncountable]
[ Date: 1900-2000 ; Language: French ; Origin: détente , from Old French destendre 'to loosen' , from tendre 'to stretch' ]
a time or situation in which two countries that are not friendly towards each other agree to behave in a more friendly way