hemina noun4 •(historical) A unit of dry measure, equivalent to around 23 liters. •(historical) A Roman unit of liquid measure reckoned as the volume of ⁵⁄₆ Roman pound of wine, equivalent to around 0.27 L....an Aeginean Hemina of Hydromel ... — 1727 •(historical) One of two traditional Spanish units of measure. •(historical) A variable unit traditionally defined as the land area that could be sown by one (dry measure) hemina of seed; typically between 500 and 1,000 square metres in size, depending on the crop and local climate. formsheminae · heminas