Fluc`tu*a"tion (?), n. [L. fluctuatio; cf. F. fluctuation.]
A motion like that of waves; a moving in this and that direction; as, the fluctuations of the sea.
A wavering; unsteadiness; as, fluctuations of opinion; fluctuations of prices.
The motion or undulation of a fluid collected in a natural or artifical cavity, which is felt when it is subjected to pressure or percussion.
© Webster 1913.