The definition of beneficial is something that has a positive effect or achieves a good result.(adjective)
An example of beneficial is the type of impact on the economy when good news about unemployment is released.
See beneficial in Webster's New World College Dictionary
Origin: ME < OFr < LL beneficialis < L benefacere: see benefaction
See beneficial in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Old French beneficial
Origin: , from Late Latin beneficiālis
Origin: , from Latin beneficium, benefit; see benefice.
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