Toponymy
The name is first recorded in 848 as Grenan forda. It is formed from the Old English 'grēne' and 'ford' and means 'place at the green ford'. Greenford was known as Great Greenford in order to distinguish it from Little Greenford, which is now known as Perivale. The affixes 'Magna' and 'Parva' have also been used to denote the difference.
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