I. om·ni·bus 1 /ˈɒmnɪbəs, -bʌs $ ˈɑːm-/ BrE AmE noun [countable]
[ Date: 1800-1900 ; Language: French ; Origin: 'bus' , from Latin , 'for all' , from omnis ; ⇨ ↑ omni- ]
1 . British English a radio or television programme consisting of several programmes that have previously been broadcast separately:
the Saturday omnibus edition of ‘Brookside’
2 . a book containing several stories, especially by one writer, that have already been printed separately:
Omnibus editions of novels tend to be too heavy to be read with comfort.
3 . British English old-fashioned a bus
II. omnibus 2 BrE AmE adjective [only before noun]
American English an omnibus law contains several different laws collected together:
an omnibus civil rights bill