Pronunciation: (fluk'chOO-āt"), [key]
—v., -at•ed, -at•ing.
1. to change continually; shift back and forth; vary irregularly: The price of gold fluctuated wildly last month.
2. to move back and forth in waves.
to cause to fluctuate.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.