a straight line or plane that bisects an angle
WordReference Random House Unabridged Dictionary of American English © 2026
bi•sec•tor
(bī sek′tər, bī′sek-),USA pronunciation n. [Geom.]
- Mathematicsa line or plane that bisects an angle or line segment.
- bisect + -or2 1860–65
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'bisector' also found in these entries (note: many are not synonyms or translations):