What is the word I am looking for?

[Stitch]

Someone must know this word I am trying to remember.

I read it in a Science Fiction book many years ago. I think it may
have been the title of the book. Then a couple of weeks ago I heard
the same word on the radio and it has been bothering me ever since.

The problem is I remember only vaguely how it was spelled, but it was
something like this: Pomistet or Palmistet.

It seems from what I remember the word had more letters than I am
using, but I don't know where I would put them.

I think the word means something like substitution or duplicate or
imitation, but there again it was a long time ago.

Any help, greatly appreciated.

Stitch

[izzy]

My best guess is that you are looking for this word:

palimpsest

a manuscript which has been re-used by scraping off the original text
and writing over the top
medievalwriting.50megs.com/glossary2.htm

A manuscript on which an earlier text has been effaced and the vellum
or parchment reused for another. It was a common practice, particularly
in medieval ecclesiastical circles, to rub out an earlier piece of
writing by means of washing or scraping the manuscript, in order to
prepare it for a new text.
www.lynnerutter.com/glossary.html

From the Greek palimpsestos ("scraped again"), a palimpsest is reused

writing support material from which theunderlying text has been erased
(by washing in the case of papyrus and by using scraping devices in the
case of parchment). Erasure was not always complete and an underlying
text can often be read with the assistance of ultraviolet light.
www.ceu.hu/medstud/manual/MMM/glossary.html

A manuscript written on a surface from which one or more earlier
writings have been erased as completely as possible. Sometimes known as
Rescript.
bibliomania.net/Glossary.html

Israel "izzy" Cohen

[Stitch]

Post by izzy
palimpsest
a manuscript which has been re-used by scraping off the original text
and writing over the top
medievalwriting.50megs.com/glossary2.htm
A manuscript on which an earlier text has been effaced and the vellum
or parchment reused for another. It was a common practice, particularly
in medieval ecclesiastical circles, to rub out an earlier piece of
writing by means of washing or scraping the manuscript, in order to
prepare it for a new text.
www.lynnerutter.com/glossary.html

From the Greek palimpsestos ("scraped again"), a palimpsest is reused

writing support material from which theunderlying text has been erased
(by washing in the case of papyrus and by using scraping devices in the
case of parchment). Erasure was not always complete and an underlying
text can often be read with the assistance of ultraviolet light.
www.ceu.hu/medstud/manual/MMM/glossary.html
A manuscript written on a surface from which one or more earlier
writings have been erased as completely as possible. Sometimes known as
Rescript.
bibliomania.net/Glossary.html
Israel "izzy" Cohen

Thanks izzy.

That was the word.

Stitch