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View synonyms for straightedge

straightedge

[ streyt-ej ]

noun

  1. a bar or strip of wood, plastic, or metal having at least one long edge of sufficiently reliable straightness for use in drawing or testing straight lines, plane surfaces, etc.


straightedge

/ ˈstreɪtˌɛdʒ /

noun

  1. a stiff strip of wood or metal that has one edge straight and true and is used for ruling and testing straight lines
“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


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Derived Forms

  • ˈstraightˌedged, adjective
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Word History and Origins

Origin of straightedge1

First recorded in 1805–15; straight + edge
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Example Sentences

Draw one through the original nail hole using a straightedge or level.

Six years later the astronomer Edmund Gunter had the bright idea of marking numbers on a straightedge proportional to their logarithms.

He began by describing age-old quests for solutions—using algebraic tools or straightedge and compass, which he considered rudimentary forms of computation.

The first requisite for this is a straightedge of iron or brass, as true as possible.

It is necessary also that the straightedge be applied frequently.

The cutter is guided along the straightedge as shown in Fig. 1.

The straightedge and the compasses are the only two drawing instruments recognized in elementary geometry.

In other words, the trisection of any angle, by the use of the straightedge and compasses alone, is impossible.

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