omnibus
US /ˈɑːm.nə.bəs/
UK /ˈɑːm.nə.bəs/

1.
a volume containing several novels or other items previously published separately
:
•
I bought an omnibus of classic detective stories.
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The author released an omnibus edition of her first three novels.
1.
comprising several items
:
•
The new bill is an omnibus package covering various reforms.
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They passed an omnibus spending bill.