hectacre

• IPA^(key): /hɛkteɪkə(ɹ)/

hect- +‎ acre.

hectacre (plural hectacres)

1. (rare) One hundred acres.

From confusion of hectare and acre.

hectacre (plural hectacres)

1. (nonstandard, erroneous) Hectare.
   • 2001, James A. Duke, Michael Castleman, The Green Pharmacy Anti-Aging Prescriptions, →ISBN, page 8:

     In Maryland, I have about six woody plant species per hectacre. (One hectacre, a metric measurement, equals 2.47 acres.)

   • 2007, Thomas T. Samaras, Human Body Size and the Laws of Scaling →ISBN, page 335 (list of abbreviations):

     ha   hectacre (2.5 acres)

   • 2009, Jen Pleasants, Bag Green Guilt, 5 Easy Steps, →ISBN, page 37:

     This deforestation in the name of beef has meant the loss of 10 million hectacres in the Brazilian Amazon since 1996. You don't even have to know what a hectacre is to know the situation is severe (btw a hectacre is 10,000 square meters, […] ).

• ceterach