Main Entry: tri·bol·o·gy

Pronunciation: \trī-ˈbäl-ə-jē, trib-ˈäl-\

Function: noun

Inflected Form(s): plural tri·bol·o·gies

: a branch of mechanical engineering that deals with the design, friction, wear, and lubrication of interacting surfaces (as bodily joints) in relative motion

—tri·bo·log·i·cal \ˌtrī-bə-ˈläj-i-kəl, ˌtrib-ə-\ adjective