Re: What is a better word for "de-duplication"?

Honestly, if it were me (assuming I even decided to fight that
battle) I would also always say "commonly called 'deduplication'", or
something similar, to signal most readers that I was, in fact, just
using a specialized term to describe something they already know about.

That's very good advice.

So, let's from now on refer to it as:

node factorisation aka de-duplication.

After repeating this sufficient number of times people will start to
use the obviously better word, then the "aka" part will naturally wean
out. Then hopefully people who write books will use the better phrase
in their next book.

Cheers,
Wendell