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protractor

pro·trac·tor

protractor

 
pronunciation:
pro traek tr [or] pro traek tr
features:
Word Parts
part of speech: noun
definition 1: a semicircular instrument with graduated markings, used in mathematics, surveying, and the like to construct and measure angles.
definition 2: a muscle that causes a body part to straighten, extend, or protrude; extensor.
Word Parts
The word protractor contains the following part: