In his physical Walter Langley form, The Weird has the ability to alter the molecular density of his body.

These shape-shifting aliens can be detected by the use of monoculars that measures molecular density.

Radu has a significantly greater molecular density than most humanoids, which accounts for his superior strength, stability and long hair (which is nearly impossible to cut).

During the battle, Astra surprised Shadowcat with the ability to hit her in intangible state, since she could match her molecular density.

She has also shown the ability to punch an 'intangible' Shadowcat, showing that she can match her molecular density.

"Remember, Jack Rogers said the cranium has incredible molecular density" "Does that mean something in real words?"

Centripetal and diffusive forces establish a density gradient that allow separation of mixtures on the basis of their molecular density.

Seth's ability to vary his molecular density helps the group to escape.

The tricorder registered a sudden drop-off in the molecular density of the adjoining wall.

Ice floats because water has a greater molecular density in liquid form than as a solid.