(rail transport) A brake used on trains, working on the principle of keeping up a vacuum in a continuous pipe or pipes extending under the train, and in brake-cylinders connected to them under each vehicle, the air being sucked out by ejectors or pumps on the locomotive.

The vacuum in the Torricellian barometer.

plural of vacuum pan

A vessel for boiling saccharine juices in a partial vacuum in sugar-making.

plural of DPT vaccine

(medicine, chiefly US) Any publicly administered vaccine comprising a combination of vaccines against diphtheria, pertussis (whooping cough) and tetanus.

Through the vagina; by way of the vagina (usually with reference to the vaginal route of administration or vaginal bleeding).

Through the vagina; by way of the vagina (usually with reference to the vaginal route of administration or vaginal bleeding).

A coarse vacuum, usually one where pressure remains at 0.1 to 1 millitorr.

(obsolete, marketing, science fiction, computing, mid-20th century) Used in the naming of computer systems and computer models, due to the use of vacuum tubes as the functional elements of computers of the time.