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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.
Learner's definition of AID. 1. [noncount] : the act of helping someone : help or assistance given to someone. The teacher enlisted/sought the aid of several students for the project. [=the teacher asked several students to help with the project] The project was completed with the aid of several students.