Protractor

//pɹəˈtɹæktə(ɹ)// noun

Definitions

Noun
  1. 1
    One who, or that which, protracts, or causes protraction.
  2. 2
    drafting instrument used to draw or measure angles wordnet
  3. 3
    A circular or semicircular tool for drawing or measuring angles.
  4. 4
    An instrument formerly used in extracting foreign or offensive matter from a wound.
  5. 5
    A muscle that extends an organ or part; opposed to retractor.
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  1. 6
    An adjustable pattern used by tailors.

Etymology

From protract + -or.

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