/ ˈprɒksi; NAmE ˈprɑːksi/ noun ( pl. -ies )
1.
[ U ] the authority that you give to sb to do sth for you, when you cannot do it yourself :
You can vote either in person or by proxy .
a proxy vote
2.
[ C , U ] proxy (for sb) a person who has been given the authority to represent sb else :
Your proxy will need to sign the form on your behalf.
She is acting as proxy for her husband.
They were like proxy parents to me.
3.
[ C ] proxy for sth ( formal or technical ) something that you use to represent sth else that you are trying to measure or calculate :
The number of patients on a doctor's list was seen as a good proxy for assessing how hard they work.
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WORD ORIGIN
late Middle English : contraction of procuracy .