It'll give you an even split

• It splits in two

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1821; agent noun from bisect .

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Bisector \Bi*sec"tor\, n. One who, or that which, bisects; esp. (Geom.) a straight line which bisects an angle.

Wiktionary Word definitions in Wiktionary
n. (context geometry English) A line or curve that bisects or divides a line segment, angle, or other figure into two equal parts.

Wikipedia Word definitions in Wikipedia
In diatonic set theory , a bisector divides the octave approximately in half and may be used in place of a generator to derive collections for which structure implies multiplicity is not true such as the ascending melodic minor , harmonic minor , and octatonic ...