The difficulty came when the session was over and I had to relate once again to a three-dimensional, physical world.

And the three-dimensional world is no closer than it was at the start.

Pilot whales are accustomed to living in a three-dimensional world without walls.

Any day now the next big thing could hit, opening up a brave, new three-dimensional world.

We'll dive into the three-dimensional world of the 3DS a little later.

Higher polytopes can obviously not exist in a three-dimensional world.

We do not want our nice three-dimensional world shattered.

In a larger sense, our three-dimensional world is such a place.

She's learning to find a three-dimensional world in a two-dimensional plane.

And in any case you're talking to the wrong man, for I only deal in the three-dimensional worlds we know.