1. the act of entering or going in
Usage: formal
2. the advance of the sea over land areas
Usage: geology

Examples

• The ingression of water through the damaged hull was rapid.
• Scientists studied the marine ingression that occurred during the last ice age.
• The ingression of cold air caused a sudden temperature drop.
• Coastal ingression has affected many low-lying areas.
• The ingression of saltwater into freshwater systems poses environmental challenges.
• Historical records show periods of marine ingression along this coastline.