[stream.line] n (1868) 1: the path of a particle in a fluid relative to a solid body past which the fluid is moving in smooth flow without turbulence
2. a: a contour designed to minimize resistance to motion through a fluid (as air) b: a smooth or flowing line designed as if for decreasing air resistance
[2]streamline vt (1913) 1: to design or construct with a streamline
2: to bring up to date: modernize 3 a: to put in order: organize b: to make simpler or more efficient