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Phrases. 1  be of assistance. 2  Be of practical use or help. âthe guide will be of assistance to development groupsâ. ââWe hope this small fund and material aid will be of assistance to the victims,â a press release stated.â.
Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Assistance(noun) the act of assisting; help; aid; furtherance; succor; support. 2  Assistance(noun) an assistant or helper; a body of helpers. 3  Assistance(noun) persons present.