Meaning of “partly” - Learner’s Dictionary

partly

adverb us uk /ˈpɑːtli/
Extra Examples
Admittedly I was partly to blame but it wasn't all my fault.The project was partly funded by the local council.The operation was only partly successful.The balloon was partly inflated.The film was partly based on a true story.

B1 used to show that something is true to some degree but not completely:

The house is partly owned by her father.
He was partly responsible.

(Definition of “partly” from the Cambridge Learner’s Dictionary © Cambridge University Press)