Replacement for the acre! (7)

I believe the answer is:

hectare

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'replacement for the acre' is the definition.
I can't judge whether this defines the answer.

'replacement for the acre' is the wordplay.
'replacement for' indicates anagramming the letters.
'the'+'acre'='theacre'
'theacre' is an anagram of 'HECTARE'.

Can you help me to learn more?

(Other definitions for hectare that I've seen before include "Surface area equal to 10,000 square meters" , "Metric land area" , "Teacher of metric land measure" , "Amount of ground" , "Extent" .)

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