Definition of protractor
1a : one that protractsb : a muscle that extends a part
2 : an instrument for laying down and measuring angles in drawing and plotting
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First Known Use of protractor
circa 1611
PROTRACTOR Defined for English Language Learners
protractor
playDefinition of protractor for English Language Learners
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: a device that has the form of a half circle and that is used for drawing and measuring angles
PROTRACTOR Defined for Kids
protractor
playDefinition of protractor for Students
: an instrument used for drawing and measuring angles
Medical Dictionary
Learn More about protractor
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See words that rhyme with protractor Spanish Central: Translation of protractor Nglish: Translation of protractor for Spanish speakers Britannica.com: Encyclopedia article about protractor
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