Pronunciation: (pal'pi-tāt"), [key]
—v., -tat•ed, -tat•ing.
1. to pulsate with unusual rapidity from exertion, emotion, disease, etc.; flutter: His heart palpitated wildly.
2. to pulsate; quiver; throb; tremble.
to cause to pulsate or tremble.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.