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| Date: | 1400-1500 |
| Language: | French |
| Origin: | aider, from Latin adjutare, from adjuvare, from ad- 'to' + juvare 'to help' |
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aid2 [transitive]
1 to help someone do something : 
an index to aid the reader
an index to aid the reader aid somebody in/with (doing) something Mrs Coxen was aided in looking after the children by her niece.
Mrs Coxen was aided in looking after the children by her niece.2 to make something happen more quickly or easily : Welfare spending aids economic development in three ways.
Welfare spending aids economic development in three ways.