The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
- A fictional device allowing a spaceship to travel faster than the speed of light, especially by passing through hyperspace.
- Informal A state of heightened activity or concentration.
Origin: hyper(space) + drive.