An amphora is the volume of a Greco-Roman era jar of the same name. They were tall, with two opposed handles near the top. The term amphora was derived from Greek words meaning "on both sides" and "carry".
The Roman amphora quadrantal (∼25.9 litres), was one cubic-pes, holding 80 libra of wine, and was used to measure liquids, bulk goods, the cargo capacity of ships, and the production of vineyards. Along with other standardized Roman measures and currency) gave an added advantage to Roman commerce. The related amphora capitolina standard, was kept in the temple of Jupiter on the Capitoline Hill in Rome.