incompressible

The outer layers of the star continue to fall inward, but as they hit this incompressible neutron core, they bounce off it, creating a shock wave.

In ordinary hydraulics, liquids are treated as absolutely incompressible.

Fluids are divided into liquids, or incompressible fluids, and gases, or compressible fluids.

Water is practically incompressible, so that the water at the bottom of the sea is no heavier than that near the surface.

To every proposition in electrostatics there is thus a corresponding one in the hydrokinetic theory of incompressible liquids.

Let a source of fluid be a point from which an incompressible fluid is emitted in all directions.