protractor
n. கோணமானி, நீட்டுத்தசை, உறுப்புக்களை நீட்டுவதற்குரிய தசைநார்.
Pro*tract"or, n. 1. One who, or that which, protracts, or causes protraction. 2. A mathematical instrument for laying down and measuring angles on paper, used in drawing or in plotting. It is of various forms, semicircular, rectangular, or circular. 3. (Surg.) Defn: An instrument formerly used in extracting foreign or offensive matter from a wound. 4. (Anat.) Defn: A muscle which extends an organ or part; -- opposed to retractor. 5. An adjustable pattern used by tailors. Knight.