palimpsest

/ˈpælɪmpsɛst/
noun
  1. An ancient document or piece of writing material that has been reused after the original text was erased, often leaving traces of the earlier writing.
    • Scholars used special lighting to read the hidden text on the medieval palimpsest.
    • By studying the palimpsest, researchers discovered a previously unknown version of an ancient poem.
    • The library's collection includes a rare palimpsest with layers of writing from different centuries.
  2. Something that has multiple layers of meaning or history, with earlier layers still visible beneath the surface.
    • The landscape is a palimpsest of geological events, each era leaving its mark.
    • Her diary became a palimpsest of emotions, with later entries covering earlier ones.
    • The old city was a palimpsest of civilizations, with Roman ruins beneath medieval streets.