| Noun | 1. | bandwagon effect - the phenomenon of a popular trend attracting even greater popularity; "in periods of high merger activity there is a bandwagon effect with more and more firms seeking to engage in takeover activity"; "polls are accused of creating a bandwagon effect to benefit their candidate"consequence, effect, result, upshot, outcome, event, issue - a phenomenon that follows and is caused by some previous phenomenon; "the magnetic effect was greater when the rod was lengthwise"; "his decision had depressing consequences for business"; "he acted very wise after the event" | |