rallyingPronunciation: /ˈraliɪŋ/Definition of rallying noun [mass noun] 1the action or process of coming together to support a person or cause: the rallying of ethnic minorities to form a new opposition party 2the sport or action of participating in a motor rally:established names in international rallying adjective having the effect of calling people to action:a rallying cryrallying in other Oxford dictionaries Definition of rallying in the US English dictionary