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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.
v. intr. To provide assistance, support, or relief: aided in the effort to improve services to the elderly. n. 1. The act or result of helping; assistance: gave aid to the enemy. 2. a. Something that provides help, support, or relief, such as money or supplies: sent medical aid to the region after the storm.