We found 16 dictionaries that define the word trisection:

General (13 matching dictionaries)

1. trisection: Merriam-Webster
2. trisection: Oxford Learner's Dictionaries
3. trisection: Collins English Dictionary
4. trisection: Wordnik
5. trisection: Wiktionary
6. trisection: Dictionary.com
7. Trisection: Wikipedia, the Free Encyclopedia
8. Trisection: Online Plain Text English Dictionary
9. trisection: Webster's Revised Unabridged, 1913 Edition
10. Trisection: AllWords.com Multi-Lingual Dictionary
11. trisection: Webster's 1828 Dictionary
12. trisection: FreeDictionary.org
13. trisection: TheFreeDictionary.com

Computing (1 matching dictionary)

14. trisection: Encyclopedia

Medicine (1 matching dictionary)

15. online medical dictionary (No longer online)

Science (1 matching dictionary)

16. Trisection: Eric Weisstein's World of Mathematics

(Note: See trisect as well.)

Definitions from Wiktionary (trisection) ▸ noun:  (geometry) The division of an angle into three equal parts. Similar: tripartition, triangle, tricotomy, quadrisection, tetrachotomy, triangular division, Trgl., trigon, quinquesection, dreibein, more... Opposite: bisection, halving, dividing in two Types: equidistant, equal-perimeter, equal-angle, more... Phrases: Angle trisection, more... ▸ Words similar to trisection ▸ Usage examples for trisection ▸ Idioms related to trisection ▸ Wikipedia articles (New!) ▸ Popular adjectives describing trisection ▸ Words that often appear near trisection ▸ Rhymes of trisection ▸ Invented words related to trisection