Pronunciation: (sal-tā'shun), [key]
1. a dancing, hopping, or leaping movement.
2. an abrupt movement or transition.
3. Geol.intermittent, leaping movement of particles of sand or gravel, as from the force of wind or running water.
a. a sudden discontinuity in a line of descent.
b. a mutation.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.