The term 'PREFIX WITH BUS' can be solved with two crossword solutions: OMNI and MINI. The prefix 'OMNI' is derived from the Latin word for 'all' and is used to describe something that is all-encompassing or universal. The prefix 'MINI' is derived from the Latin word for 'SMALL' and is used to describe something that is very SMALL in size. Both of these prefixes are commonly used when referring to buses, such as an 'OMNIBUS' or a 'MINIBUS'.