单词 | protractor |
释义 | protractor[ proh-trak-ter, pruh- ] / proʊˈtræk tər, prə- / nouna 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. Origin of protractorFrom Medieval Latin, dating back to 1605–15; see origin at protract, -tor Words nearby protractorprotozoophage, protract, protracted, protractile, protraction, protractor, protriptyline, protrude, protruded disk, protrusile, protrusion Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for protractorBritish Dictionary definitions for protractorprotractor / (prəˈtræktə) / nounan 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 Medical definitions for protractorprotractor [ prō-trăk′tər ] n.A muscle that extends a limb or other part. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. |
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