What do you call an elongated cube

This should be elementary but I have a MS and can't answer my daughters question. Essentially she asked; if a cube is a 3D square, what is the name of a 3D rectangle? I came up with rectangular box, rectangular prism, and rectangular parallelepiped. The correct name should apply even if two of the faces are squares or if two faces are rectangles. The shape is as common as a brick yet I can think of no simple answer. If I don't find the correct term, she will invent one. This daughter has named foam packing peanuts as "ghost poo".

I don't know of a simple technical name like cube. I think the most common name is rectangular box or just box. So I know this might sound nit-picky but I had a question that wasn't resolved by your website and then found the answer somewhere else.

The question was asked by Jack here about what a 3d rectangle would be called. Members Current visitors. Interface Language. Log in. Install the app. Forums English Only English Only. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser. It may not display this or other websites correctly.

A cuboid is a box-shaped object. It has six flat faces and all angles are right angles. And all of its faces are rectangles. Examples of Cuboids Cuboids are very common in our world, from boxes to buildings we see them everywhere. A building. A box with a slot as a handle.