Main Entry:

tri·sect

Pronunciation:

\ˈtrī-ˌsekt, trī-ˈ\

Function:

transitive verb

Etymology:

tri- + intersect

Date:

1695

: to divide into three usually equal parts

— tri·sec·tion \ˈtrī-ˌsek-shən, trī-ˈ\ noun

— tri·sec·tor \ˈtrī-ˌsek-tər, trī-ˈ\ noun