dis•si•patePronunciation: (dis'u-pāt"), [key]
—v., -pat•ed, -pat•ing.
to scatter in various directions; disperse; dispel.
to spend or use wastefully or extravagantly; squander; deplete: to dissipate one's talents; to dissipate a fortune on high living.
to become scattered or dispersed; be dispelled; disintegrate: The sun shone and the mist dissipated.
to indulge in extravagant, intemperate, or dissolute pleasure.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.