Tahdiya is Arabic (تهدئة) for "calming" or "quieting".
It is an Islamic legal concept that refers to the temporary pacification of conflict and is sometimes translated a temporary-ceasefire.
However, unlike a more permanent truce, it is nonbinding and may be broken at any time and without delay by Muslims.
[1] The term has been applied to a proposed temporary lull between the Israeli forces and the Palestinian National Authority branch of the Muslim Brotherhood Hamas, beginning early in 2004 following the non-successful discussions to sign a hudna, or temporary armistice.
While hudna is a term for temporary armistice, it should not be confused with tahdiya, which stands for calming down on hostilities but not a complete stop to them.