Bisector is a term that refers to a line or plane that divides an object or angle into two equal parts. Some synonyms for the word Bisector are divider, halver, splitter, separator, and cutter. These words express the same concept of dividing an object or angle into two parts. Other synonyms could include splitter, slicer, chopper, and divider, all of which denote the act of separating something into two equal portions. While these words differ in their nuances, they all convey the same idea of dividing something into two equal halves, be it a line, an angle, or an object.