1. A device, process, or creation that has been conceived and partially developed but not yet completed or perfected
Leonardo da Vinci left many unfinished inventions in his notebooks.
Leonardo da Vinci deixou muitas invenções inacabadas em seus cadernos.
2. A project or idea that remains in a preliminary or incomplete state
The startup's unfinished invention showed great potential but needed more development.
A invenção inacabada da startup mostrava grande potencial, mas precisava de mais desenvolvimento.