Greek: scraped again. Palin + psestos.

Parchment was expensive. Prepared animal skin took time, animals and skill, and a page was a material asset long after the words on it stopped being interesting to anyone. So a scribe with an old text nobody was reading and no money for new sheets did the obvious thing: scraped it off and wrote something else.

That was not vandalism. It was economy — and it is worth insisting on, because the popular image of a palimpsest is a suppressed text, and the reality is almost always somebody being practical about supplies.

Which produces the fact that makes this word remarkable.

Scraping does not delete. It removes the visible ink, but it disturbs the surface and leaves chemical traces in the material. So the old text is still physically there — invisible, but present — and multispectral and X-ray imaging can bring it back, centuries after somebody washed it off.

The Archimedes Palimpsest is the demonstration everybody cites. A copy of Archimedes' mathematical works was scraped and overwritten with a prayer book. The undertext, recovered by imaging, preserves material for which that erased layer is the only surviving source. Work that would otherwise have vanished entirely was saved by the act of being erased, because erasure meant reuse and reuse meant the page survived while unerased manuscripts rotted, burned or were thrown away.

The overwritten text is the one that lasted.

And because the Greek names an action rather than an object, the word travels. A city is a palimpsest — Roman road under medieval lane under motorway. A landscape is one. A person's habits are one. Anywhere something has been written over rather than removed, and the earlier layer is still faintly legible to whoever knows how to look.