Pro-trāct'or, n.

noun

n. 1. One who, or that which, protracts.

Sense 2. A mathematical instrument for laying down and measuring angles on paper, used in drawing or plotting. It is of various forms, semicircular, rectangular, or circular.

Sense 3. (Surg.) An instrument, resembling a forceps, used in extracting foreign or offensive matter from a wound.

A semicircular protractor with graduated markings and a central pointer. — Protractor. (2.)