Definition of hectare noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈhekteə(r)//
, also BrE//ˈhektɑː(r)//
; NAmE NAmE//ˈhekter//
(abbreviation ha)
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a unit for measuring an area of land; 10 000 square metres or about 2.5 acres Word Origin early 19th cent.: from French, formed irregularly from Greek hekaton ‘hundred’ + are2.
See the Oxford Advanced American Dictionary entry: hectare