Nonvolatile
Definition 1 of 2

Technical
In computing, nonvolatile memory ensures data isn't lost.

Like a USB drive that keeps your files safe even after the computer is turned off.
Consistent
Nonvolatile items remain stable across varying conditions.

Think of nonvolatile materials used in science that do not evaporate easily.
Compare with
volatilepersistentstablereliabletemporary
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