Word Study
Hectare
CIDE DICTIONARY
Hectare, n. [F., fr. Gr. hundred + F. are an are.].
A measure of area, or superficies, containing a hundred ares, or 10,000 square meters, and equivalent to 2.471 acres. [1913 Webster]
OXFORD DICTIONARY
Hectare, n. a metric unit of square measure, equal to 100 ares (2.471 acres or 10,000 square metres).
Derivative
hectarage n.
Etymology
F (as HECTO-, ARE(2))
For further exploring for "Hectare" in Webster Dictionary Online