protractor - WordReference.com Dictionary of English

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- See Also:
- - protoplasm
  - protoplast
  - protostome
  - prototherian
  - prototype
  - protozoan
  - protract
  - protracted
  - protractile
  - protraction
  - protractor
  - protrude
  - protrusion
  - protuberance
  - protuberant
  - proud
  - Prov.
  - prove
  - provenance
  - Provençal
  - provençale
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protractor

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Concise Oxford English Dictionary © 2008 Oxford University Press:
protractor/prəˈtraktə(r)/

▶noun

1 an instrument for measuring angles, typically in the form of a flat semicircle marked with degrees along the curved edge.

2 chiefly Zoology a muscle serving to extend a part of the body. Compare with retractor.

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