seepage

When liquid or gas slowly leaks through tiny holes or gaps in a container or barrier, it's called seepage. The seepage of rain water through the foundation of your house can result in a very damp basement.

Seepage is the process of something seeping, or leaking extremely slowly. You usually can't see seepage happening, the way you'd observe a leak from a faucet. Water seepage from an upstairs bathroom can gradually stain the ceiling of the room below, and the seepage of gas from your stove can be very dangerous to breathe. We can trace this word back to a root meaning "to pour out, drip, or trickle."

Definitions of seepage
  1. noun
    the process of seeping
    synonyms: ooze, oozing
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    types:
    exudation, transudation
    the process of exuding; the slow escape of liquids from blood vessels through pores or breaks in the cell membranes
    type of:
    flow, flowing
    the motion characteristic of fluids (liquids or gases)
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