Because this Professor Laurel has always claimed that these cubes he makes are actually four-dimensional objects.

Your friend saw a seed, a man-made four-dimensional object.

Instead it was combined with space in a four-dimensional object called space-time.

There are other computer programs that exhibit two-and three-dimensional projections of four-dimensional objects.

In periods of intense concentration he could answer questions about complicated four-dimensional objects by visualizing them.

"The interaction has caused the fields to link into a single four-dimensional object."

Ted Sider and others have proposed that these problems can be solved by considering all things as four-dimensional objects.

This four-dimensional object is made up of three-dimensional time-slices.

Crane had been visualizing four-dimensional objects as three- dimensional while she was speaking.

In geometry, the 5-cell is a four-dimensional object bounded by 5 tetrahedral cells.