IPA: /ˈɒm.nɪ.bəs/
KK: /ˈɑːm.nə.bəs/
Relating to or covering many different things at the same time.
The omnibus bill included various reforms in education, healthcare, and transportation.
A large vehicle used to transport many passengers, often along a set route, or a book that collects various works by one author or on a specific topic.
The city introduced a new omnibus service to make public transport more accessible.
Omnibus is derived from the Latin word "omnis" (meaning all or every) and the suffix "-bus" (a form of the dative plural of "is", meaning for or to). The term originally referred to a vehicle designed to carry all passengers, hence the modern meaning of a bus as a public transport vehicle for many people.
Think of 'all' ('omnis') being carried together in a vehicle ('-bus'), which helps you remember that an 'omnibus' is a vehicle for everyone.