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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.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  treatment, intervention(noun) care provided to improve a situation (especially medical procedures or applications that are intended to relieve illness or injury) 2  treatment, handling(noun) the management of someone or something.