IPA: /ˈɪʃuəbl/
KK: /ˈɪʃuəbl/
Able to be issued or distributed, often referring to documents, currency, or securities that can be formally provided or released.
The company announced that new shares are issuable to investors next month.
Issuable is formed from "issue" (from Old French *issir*, meaning to go out or to come forth) and "-able" (meaning capable of or suitable for). The word "issuable" means capable of being issued or released.
Think of something that is 'capable of being released' — 'issue' means to come forth, and '-able' indicates suitability.