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trisect

[trahy-sekt, trahy-sekt] /traɪˈsɛkt, ˈtraɪ sɛkt/
verb (used with object)
1.
to divide into three parts, especially into three equal parts.
Origin
1685-1695
1685-95; tri- + -sect < Latin sectus, past participle of secāre to cut, sever; see section
Related forms
trisection, noun
trisector, noun
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for trisector

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
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for trisector

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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