alterability's Usage Examples:

He rejected the Berzelian tenet as to the unalterability of radicals, and admitted that they exercised a considerable influence upon the compounds with which they were copulated.

The investigation of this substance and its properties (see Radioactivity) has proceeded so far as to render it probable that the theory of the unalterability of elements, and also the hitherto accepted explanations of various celestial phenomena - the source of solar energy and the appearances of the tails of comets - may require recasting.

Synonyms:

mutableness, mutability,

Antonyms:

unalterability, immutability, immutableness,