fit together phrasal verb ( see also ↑ fit )
1 . if something fits together or you fit it together, different pieces can be joined to make something:
Look, the tubes fit together like this.
fit something together
The pictures show you how to fit it together.
2 . if a story, set of facts, set of ideas etc fit together, they make sense when considered together:
Telecom and computer businesses fit together well.