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.
A transformation that preserves angles and the ratios of distances
The property of two matrices being similar.
Closeness of appearance to something else.
The relation of sharing properties.