protractor

protractor

English

Etymology

    From protract + -or.

    Pronunciation

    • IPA(key): /pɹəˈtɹæktə(ɹ)/
      • Audio (Southern England):(file)
    • Rhymes: -æktə(ɹ)

    Noun

    protractor (plural protractors)

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

    Synonyms

    • (measuring tool): semicircle (for semicircular shape)

    Hypernyms

    Translations

    References

    1. ^ Edward H[enry] Knight (1877), “Protractor”, in Knight’s American Mechanical Dictionary. [], volumes II (GAS–REA), New York, N.Y.: Hurd and Houghton [], →OCLC.