Any software-controlled technique for transfering data fron one program or task to another during processing.

A tube made of metal, clay, plastic, wood, or concrete and used to conduct a fluid, gas, or finely divided solid.

1. A vertical, cylindrical ore body. Also known as chimney; neck; ore chimney; ore pipe; stock.

2. A tubular cavity of varying depth in calcareous rocks, often filled with sand and gravel.

3. A vertical conduit through the crust of the earth below a volcano, through which magmatic materials have passed. Also known as breccia pipe.

1. The central cavity in an ingot or casting formed by contraction of the metal during solidification.

2. An extrusion defect caused by the oxidized surface of the billet flowing toward the center of the rod at the back end.