DictionarysaturationComplete fullness
noun

saturation

sach-uh-RAY-shun/ˌsætʃəˈreɪʃn/

The degree to which available capacity is filled.

The sponge reaches saturation, so additional water spills over its soaked surface.

A completely waterlogged sponge sits in a shallow puddle, with additional water running across its already soaked surface and spilling from its edges.
Etymology

The underlying “fill full” image connects complete satisfaction of an appetite with thorough soaking. Whether formed in English or taken from the Latin noun, saturation names filling or fullness, especially when no more can be received.

In context

Plainly Difficult474:14
the dam was blighted with issues relating to drainage construction defects resulting in water management errors and saturation of the sand tailings
ReWind: Year 5 Omnibus of Plainly Difficult

More examples

  • After hours of rain, the soil reaches saturation.
  • Market saturation makes it hard for another coffee shop to compete.
  • At peak hours, the network approaches saturation and connections slow down.

Forms

saturation

saturate verb — To fill or supply to capacity.

Similar words

fullness
Describes how full something is without emphasizing its capacity limit.
occupancy
Measures occupied space or positions rather than capacity generally.