(Askeri) İKİYE BÖLME USULÜ: Açık metni kriptolamak için hazırlama usulü. Bunda bir haberin açık metni, çok kez, birbirine eşit olmayan iki kısım veya parçaya ayrılır. Bu kısımlara, haberin başı ve sonu hiç belli olmayacak bir tertip verilip, gerçek başlangıç özel bir tarzda belirtilir
An envelope, card, or fragment thereof showing an affixed cut half of a regular issued stamp, over which one or more postal markings have been applied. Typically used in wartime when normal lower rate stamps may not be available
A stamp cut or perforated into two parts, each half representing half the face value of the original stamp Officially authorized bisects have often been used during temporary shortages of commonly used denominations Unauthorized bisects appear frequently on mail from some countries in some periods Bisects are usually collected on full cover with the stamp tied by a cancel At times, some countries have permitted trisects or quadrisects
Bisect means to cut something in half For example, to bisect an angle, you would draw a line through the vertex of the angle such that the two angles created are equivelent in measure
If something long and thin bisects an area or line, it divides the area or line in half. The main street bisects the town from end to end. to divide something into two equal parts (bi- + -sect (as in intersect))