# trisect

[trahy-sekt, trahy-sekt] /traɪˈsɛkt, ˈtraɪ sɛkt/
verb (used with object)
1.
to divide into three parts, especially into three equal parts.
Origin of trisect
1685-1695
1685-95; tri- + -sect < Latin sectus, past participle of secāre to cut, sever; see section
Related forms
trisection, noun
trisector, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for trisection
Historical Examples
• There is one trisection which is of more importance than that of the angle.

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

David Eugene Smith
• He also contributes to the history of the trisection of an angle.

David Eugene Smith
• A rule for the cubic equation by which the problem of trisection is solved has been given by Cardan.

Henry Dircks
• Geometry versus Algebra; or the trisection of an angle geometrically solved.

Augustus de Morgan
• His problems of the trisection of the angle, and the duplication of the cube, are curious and interesting.

Joel Munsell
British Dictionary definitions for trisection

## trisect

/traɪˈsɛkt/
verb
1.
(transitive) to divide into three parts, esp three equal parts
Derived Forms
trisection (traɪˈsɛkʃən) noun
trisector, noun
Word Origin
C17: tri- + -sect from Latin secāre to cut
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for trisection

## trisect

v.

1660s (implied in trisection), from tri- "three" + Latin sectus "cut," past participle of secare "to cut" (see section (n.)). Probably patterned on bisect.

Online Etymology Dictionary, © 2010 Douglas Harper
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### Difficulty index for trisect

Few English speakers likely know this word

### Word Value for trisection

12
14
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