Pronunciation: (in-kûr'zhun, -shun), [key]
1. a hostile entrance into or invasion of a place or territory, esp. a sudden one; raid: The bandits made brief incursions on the village.
2. a harmful inroad.
3. a running in: the incursion of sea water.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.