- a person or thing that protracts.
- (in surveying, mathematics, etc.) an instrument having a graduated arc for plotting or measuring angles.
- a muscle that causes a part to protrude.
- an instrument for measuring or drawing angles on paper, usually a flat semicircular transparent plastic sheet graduated in degrees
- a person or thing that protracts
- a surgical instrument for removing a bullet from the body
- anatomy a former term for extensor
