Definition of double determiner from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈdʌbl//
; NAmE NAmE//ˈdʌbl//
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twice as much/many  twice as much or as many as His income is double hers. He earns double what she does. We need double the amount we already have. Word OriginMiddle English: via Old French from Latin duplus, from duo ‘two’ The verb is from Old French dobler, from late Latin duplare, from duplus.
See the Oxford Advanced American Dictionary entry: double