au ‧ thor ‧ ship AC /ˈɔːθəʃɪp $ ˈɒːθər-/ BrE AmE noun [uncountable]
1 . the fact that you have written a particular book, document etc:
There’s no evidence to dispute his claim to authorship.
authorship of
an investigation into the authorship of the Bible
2 . formal the profession of writing books