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protractor

noun pro·trac·tor \-ˈtrak-tər\

: a device that has the form of a half circle and that is used for drawing and measuring angles

Full Definition of PROTRACTOR

a : one that protracts

b : a muscle that extends a part

: an instrument for laying down and measuring angles in drawing and plotting

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First Known Use of PROTRACTOR

circa 1611

Rhymes with PROTRACTOR

abstractor, attractor, cofactor, compactor, contractor, detractor, enactor, exactor, extractor, fudge factor, g-factor, impactor, load factor, reactor, redactor, refractor, retractor, subtracter, transactor

PROTRACTOR Defined for Kids

protractor

noun pro·trac·tor \prō-ˈtrak-tər\

Definition of PROTRACTOR for Kids

: an instrument used for drawing and measuring angles

Medical Dictionary

protractor

noun pro·trac·tor \-tər\

Medical Definition of PROTRACTOR

: a muscle that extends a part—compare retractor b

Learn More About PROTRACTOR

Spanish Central: Spanish translation of "protractor"

Nglish: Translation of "protractor" for Spanish speakers

Britannica.com: Encyclopedia article about "protractor"

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