hec ‧ tare /ˈhektɑː, -teə $ -ter/ BrE AmE noun [countable] ( written abbreviation ha )
[ Date: 1800-1900 ; Language: French ; Origin: hect- 'hundred' ( HECTO- ) + are 'area of 100 square meters' (from Latin area ) ]
a unit for measuring area, equal to 10,000 square metres ⇨ acre