non-transmutable

Updated: June 1, 2025

Every one appears always to maintain its unique integrity, gaining nothing and losing nothing. All this being true, it would seem as if the position of the Daltonian atom as a primordial bit of matter, indestructible and non-transmutable, had been put to the test by the chemistry of our century, and not found wanting.

Edward Huntington Williams - A History of Science — Volume 4