IPA: /ɪˈstæblɪʃəbl/
KK: /ɪˈstæblɪʃəbl/
Capable of being set up or created.
The new guidelines are establishable within the current framework.
Establishable is formed from "establish" (from Old French *establir*, meaning to make stable or firm) and "-able" (meaning capable of being). The word "establishable" means capable of being made stable or firm.
Think of something that can be made stable or firm — that's what establishable means.