Definition of trisect in English:

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Pronunciation: /trʌɪˈsɛkt/


[with object]
Divide (something) into three parts, typically three equal parts: two walls trisect the gallery
More example sentences
  • Nicomedes trisected any rectilinear angle by means of the conchoidal curves, of which he had handed down the origin, order, and properties, being himself the discoverer of their special characteristic.
  • Today, even as traffic signals multiply and thick yellow lines bisect and trisect the roads, motorists, scooterists and non-conformists all line up together at painfully long red lights and plan strategy.
  • The right of the two diagrams shows how this hyperbola can be used to trisect the angle AOB.



Pronunciation: /trʌɪˈsɛkʃ(ə)n/
Example sentences
  • He also discussed parabolas, angle trisection and magic squares.
  • In extending from the Pythagorean numbers to the totally real Vietens, it is important to understand the constructions involving trisections.
  • Three geometric construction problems from antiquity puzzled mathematicians for centuries: the trisection of an angle, squaring the circle, and duplicating the cube.


Pronunciation: /trʌɪˈsɛktə/
Example sentences
  • Their centers thus lie on the trisectors of the angles adjacent to that line.
  • If the angles of any triangle be trisected, the triangle, formed by the meets of pairs of trisectors, each pair being adjacent to the same side, is equilateral.
  • We no longer look kindly on angle trisectors and circle squarers.


Late 17th century: from tri- 'three' + Latin sect- 'divided, cut' (from the verb secare).

For editors and proofreaders

Line breaks: tri|sect

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