Fixity (noun)

The state or quality of being fixed or unchanging; permanence.

Origin:

Late 16th century: from fix + -ity.

Examples:

1. The fixity of the mountain range was disrupted by earthquakes.
2. The fixity of the stars in the sky fascinated ancient astronomers.
3. The fixity of the tradition provided a sense of stability in the community.
4. The fixity of the species' genetic code is critical for its survival.
5. The fixity of the laws of physics is essential for our understanding of the universe.