selfsameness

About 0.01 uses per million words.

Meaning

1. noun The property of two or more appearances of being of the selfsame underlying object; sameness as regards self or identity; identity; identicality.

   There is no doubt about the selfsameness of the morning Sun with the evening Sun.

Similar words

sameness standards of identity synonymy self-identity one and the same identicalism similarness self-same identical homosemy

Often followed by

of and in is as