IPA: /ʌnˈkɔɪnd/
KK: /ʌnˈkɔɪnd/
Not created or invented; something that has not been expressed in words or terms.
The concept was still uncoined, waiting for someone to articulate it clearly.
Uncoined → It is formed from "un-" (meaning not) and "coined" (from Old French *coindre*, meaning to mint or create coins). The word "uncoined" refers to something that has not been minted or created as currency.
Think of something that is 'not' ('un-') 'minted' or 'created' ('coindre') as currency — that's why uncoined means it hasn't been made into coins.