omnibus

UK: /ˈɒmnɪbʌs/ US: /ˈɑmnəˌbʌs, -bəs/ ,(om′nə bus′, -bəs)

Inflections of 'omnibus' (n): npl: omnibuses

WordReference Random House Learner's Dictionary of American English © 2025

om•ni•bus /ˈɑmnəˌbʌs, -bəs/   n., pl. -bus•es or bus•ses, adj. 
n. [countable]

1. Transport bus¹ (def. 1).

adj. [before a noun]

2. Government relating to, including, or dealing with many items at once:
   an omnibus legislative bill.

WordReference Random House Unabridged Dictionary of American English © 2025

om•ni•bus  (om′nə bus′, -bəs), n., pl. -bus•es, or, for 1, -bus•ses, adj. 
n. 

1. Transport bus (def. 1).
2. Literature a volume of reprinted works of a single author or of works related in interest or theme.

adj. 

3. Government pertaining to, including, or dealing with numerous objects or items at once:
   an omnibus bill submitted to a legislature.

• Latin: for all (dative plural of omnis)
• French
• 1820–30

Collins Concise English Dictionary © HarperCollins Publishers::

omnibus / ˈɒmnɪˌbʌs -bəs/ noun ( -buses)

1. a less common word for bus1
2. Also called: omnibus volume a collection of works by one author or several works on a similar topic, reprinted in one volume
3. Also called: omnibus edition a television or radio programme consisting of two or more programmes broadcast earlier in the week

adjective

1. (prenominal) of, dealing with, or providing for many different things or cases

Etymology: 19th Century: from Latin, literally: for all, from omnis all