trilinear

/traɪˈlɪniər/
adjective
  1. Relating to or involving three lines.
    • In geometry class, we studied trilinear figures formed by three intersecting lines.
    • The trilinear coordinates of a point in a triangle are based on its distances to the three sides.
    • The artist created a trilinear design using three parallel lines across the canvas.
What does "trilinear" mean? | whatsthatwordmean | whatsthatwordmean