J. Donald Walters

In a sense, each of us is an island. In another sense, however, we are all one. For though islands appear separate, and may even be situated at great distances from one another, they are only extrusions of the same planet, Earth.

Author

Extrusion is often used in industrial and manufacturing contexts to describe a production method.

Industrial Usage

Extrusion implies a material has been shaped into a continuous profile.

Shape Creation

The term 'extrusion' is technical and mainly used by professionals in relevant fields.

Technical Term

When 'extrusion' refers to an object, it describes the actual item made by the extrusion process.

Physical Object

Extrusion is commonly paired with a material type to indicate what the item is made from.

Material Specific

In geology, 'extrusion' often involves natural processes relating to volcanoes and magma.

Geological Phenomenon

The term is mostly found in earth science textbooks or documentaries about natural disasters.

Earth Science Context

Extrusion can refer to other geological processes, not just volcanic activity.

Not Always Volcanic

 we were able to achieve a wide array of properties -- from dark, stiff and opaque, to light, soft and transparent. In order to print the structures in large scale, we built a robotically controlled extrusion system with multiple nozzles.

Design at the...

 this is what's called the extrusion process inside this machine the cornmeal and water are heated and kneaded along a central screw under pressure the water