IPA: /ˈɑːrmɪstɪs/
KK: /ˈɑrmɪstɪs/
A temporary agreement between opposing sides to stop fighting or hostilities.
The two countries signed an armistice to end the war temporarily.
Armistice is formed from "arma" (meaning arms or weapons) and "stare" (meaning to stand). The term refers to a standing down of arms, or a ceasefire between warring parties.
Think of 'arms' ('arma') being put down or 'standing' ('stare') still — that's why an armistice means a ceasefire.