Nonvolatile
(adjective)
Not evaporating easily; not changing quickly or unpredictably.
Origin:
Non- + volatile, from volatil (adj.).
Examples:
- Nonvolatile memory stores data even when the power is turned off.
- The chemical compound is nonvolatile and can be stored for long periods of time.
- The nonvolatile solids content is a measure of the total solids that remain after evaporation.
- The commodity prices have been relatively nonvolatile in the past year.
- Nonvolatile organic compounds are a group of pollutants that are not readily broken down by the environment.