[unit] The se`ah (סאה) is a unit of dry measure of ancient origin used in Halakha (Jewish law), which equals one third of an ephah, or bath. Since the bath unit has been established to be 22 litres, 1 se`ah would equal 7.33 litres or 7.33dm3. ... Found on http://en.wikipedia.org/wiki/Seah_(unit)