bandwagon effect is a noun meaning "the phenomenon of a popular trend attracting even greater popularity". It carries one recorded sense.
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”
Definitions, synonyms and semantic relations for bandwagon effect come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.