streamline

To construct or design in a form that offers the least resistance to fluid flow.

To design with flowing, graceful lines.

To improve the efficiency of, often by simplification.

A line that is parallel to the direction of flow of a fluid at a given instant.

The path of one particle in a flowing fluid.

A contour of a body constructed so as to offer minimum resistance to a fluid flow.

See line, and line of flow (under flow).

The path of a constituent particle of a flowing fluid undisturbed by eddies or the like.

Of or pert. to a stream line; designating a motion or flow that is free from turbulence, like that of a particle in a streamline; hence, designating a surface, body, etc., that is designed so as to afford an unbroken flow of a fluid about it, esp. when the resistance to flow is the least possible; ; — the current usuage prefers the term streamlined.