A wavering; unsteadiness.
In medicine, a wave-like motion or undulation of a fluid in a natural or abnormal cavity (e.g. pus in an abscess), which is felt during palpation or percussion.
A motion like that of waves; a moving in this and that direction.
The state or characteristic of being variable.
The degree to which a thing is variable. In data or statistics this is often a measurement of distance from the mean or a description of data range.