The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
American theoretical physicist who made significant contributions to quantum physics and general relativity. He coined the terms “black hole” and “wormhole.” |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
n. 1. One that wheels. 2. A thing that moves on or is equipped with wheels or a wheel. Often used in combination: a three-wheeler; a paddle-wheeler. 3. A wheel horse. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.