Fluctuation
Pronunciation : Fluc`tu*a"tion
Part of Speech : n.
Etymology : [L. fluctuatio; cf. F. fluctuation.]
Definition : 1. A motion like that of waves; a moving in this and that direction; as, the fluctuations of the sea.
2. A wavering; unsteadiness; as, fluctuations of opinion; fluctuations of prices.
3. (Med.)
Defn: 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. Dunglison.
Source : Webster's Unabridged Dictionary, 1913