1 noun boost, incentivespreagadh masc c m uspreagthach masc1 c m uit could provide a stimulus for changed'fhéadfadh sé athrú a spreagadhmoney is sometimes the stimulusairgead an spreagthach a bhíonn ann uaireantaan economic stimulus packagepacáiste leis an ngeilleagar a spreagadh2 noun BIOL, MED to physical functionspreagthach masc1 c m uspreagadh masc c m uvisual stimulusspreagthach amhaircthe antigen acts as a stimulus to the cellsfeidhmíonn an antaigin mar spreagthach do na cealla