trisection
noun
trisection is a noun meaning “The act of division of something (such as an angle, line segment, or circle) into three parts, especially three equal parts” (English Wiktionary, September 2026). It is spelled T-R-I-S-E-C-T-I-O-N, and it appears about once in every 95 million words in written English (wordfreq, 2021 data). The plural of trisection is trisections.
What does trisection mean?
noun
- 1
The act of division of something (such as an angle, line segment, or circle) into three parts, especially three equal parts.
A traditional (but impossible) mathematical problem was to achieve trisection using a straight edge and compass.
- 2
Any of the three portions thus produced.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How do you pronounce trisection?
- US
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Flame,_not_lame-trisection.wav, Wikimedia Commons (author and licence on each file's page).
Forms of trisection
- trisections plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is trisection?
Trisection appears about once in every 95 million words in written English, the 313,259th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).