My question concerns the following line on wikipedia page the word about Cess.
In colonial India it was applied, with a qualifying prefix, to any taxation, such as irrigation-cess, educational-cess, and the like.
I am confused the word cess, because it is used after the words irrigation and education yet it is called a prefix.
My first initial thoughts were that use of the word prefix was wrong. So I corrected it. And it stayed that way until few days later someone reverted my edit implying that it was obviously wrong since "Prefix" means before so Cess is a prefix. Now I, either, have been making some stupid grave mistakes throughout my life so far or am simply confused.