Definition of bisects:
(v) :
(transitive) To cut or divide into two parts.
(v) :
(transitive, geometry) To divide an angle, line segment, or other figure into two equal parts.
(v) :
(computing) To perform a binary search on files in source control in order to identify the specific change that introduced a bug etc.
(n) :
(geometry) A bisector, which divides into two equal parts.
(n) :
(philately) 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.