a person or thing that protracts.
(in surveying, mathematics, etc.) an instrument having a graduated arc for plotting or measuring angles.
Anatomy. a muscle that causes a part to protrude.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use protractor in a sentence
It contains a front pocket with an organizer for pens, pencils, and protractors, and its main compartment can hold textbooks and binders.
Then, if we have a protractor, we may apply it to the lines and see how many degrees of angle they contain.Mechanical Drawing Self-Taught | Joshua Rose
The student should have and use a protractor, such as is furnished with this book, for the numerous exercises which are to follow.A Text-Book of Astronomy | George C. Comstock
Rule another line along the same edge of the board as before and with a protractor measure the angle between these lines.A Text-Book of Astronomy | George C. Comstock
At that point find, by means of a protractor, the angle a projection of the chord makes with the face of the beam.The Aeroplane Speaks | H. Barber
No witness could tell more truth than the compass and protractor of Mr. Smith which were free from prejudice and partiality.Sages and Heroes of the American Revolution | L. Carroll Judson
British Dictionary definitions for protractor
an instrument for measuring or drawing angles on paper, usually a flat semicircular transparent plastic sheet graduated in degrees
a person or thing that protracts
a surgical instrument for removing a bullet from the body
anatomy a former term for extensor
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012