seepage

noun

seep·​age ˈsē-pij 

1

: the process of seeping : oozing

2

: a quantity of fluid that has seeped (as through porous material)

Examples of seepage in a Sentence

Check for seepage in the basement.

Recent Examples on the Web

Its enormous size, for example, complicates the search for a permanent hydrogen leak fix because a massive rocket requires a large flow rate for the fuel — increasing the risk of seepage. —Jackie Wattles, CNN Money, 18 Feb. 2026

Expansive tracts of upland pine and hardwood forests frame the trails, while the seepage slopes host carnivorous pitcher plants, terrestrial orchids, and other rare species. —Carrie Honaker, Travel + Leisure, 15 Feb. 2026

For centuries, Lake Maracaibo’s environs were known for natural seepage of oil rising to the surface from sedimentary rock, a phenomenon also seen in sites like Los Angeles’ La Brea Tar Pits. —Mery Mogollón, Los Angeles Times, 15 Feb. 2026

Previous spills in Flint River The headwaters of the Flint River, which flows south all the way to Florida, begin from seepage around the area of the Atlanta airport, meaning any contaminants from that area can reach the river more easily. —Irene Wright, USA Today, 6 Feb. 2026

Word History

First Known Use

circa 1825, in the meaning defined at sense 1

Kids Definition

seepage

noun

seep·​age ˈsē-pij 

1

: the process of seeping

2

: a quantity of fluid that has seeped through something