Liquid





One of the four phases of matter, a liquid is a fluid whose volume is fixed
under conditions of constant temperature and pressure and whose shape is
usually determined by the container it fills. Liquids tend to pull
themselves together into droplets due to surface tension. The kinetic energy
in a liquid is greater than that of a solid, but less than that of a gas.
Atoms in a liquid slide over one another, allowing the liquid to flow.

It should be noted that glass at normal temperatures is not a "supercooled
liquid", but a solid.