## Word Origin & History

1550s, from Middle French cube (13c.) and directly from Latin cubus, from Greek kybos "a cube, a six-sided die, vertebra," perhaps from PIE root *keu(b)- "to bend, turn." Mathematical sense is from 1550s in English (it also was in the ancient Greek word: the Greeks threw with three dice; the highest possible roll was three sixes).

## Example Sentences forcube

Professor Johnson placed the cube gently on the machine's platform.

The square of any such number represents a surface, the cube a solid.

Keep your eyes on me, for to look at the cube spells danger!

The second cube came back unchanged, except that it was newer, shinier.

I flicked the switch and opened the door, expecting to find the cube vanished.

The scene in the cube flashed and coalesced, dazzling Lonnie's eyes for a moment.

Thus the cube's outlines were not reconstructed; and, in effect, it had vanished.

And the fact that the cube was still there, was perfectly obvious.

Let us take Fig. 101, which appears to be the perspective of a cube.

To find the solidity of a sphere: Multiply the cube of the diameter by .5236.