Protractor Definition

prō-trăktər, prə-
protractors
noun
A person or thing that protracts.
Webster's New World
An instrument in the form of a graduated semicircle, used for plotting and measuring angles.
Webster's New World
A muscle that protracts, or extends, a limb.
Webster's New World

One who, or that which, protracts, or causes protraction.

Wiktionary

(surgery) An instrument formerly used in extracting foreign or offensive matter from a wound.

Wiktionary

Other Word Forms of Protractor

Noun

Singular:
protractor
Plural:
protractors

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protractor