Cloverleaf
A gravitationally lensed image of a very distant quasar (redshift 2.56) in the form of four images separated by about 1 arc second. The lensing galaxy has not yet been detected and may itself lie at comparatively high redshift. See gravitational lens.Collins Dictionary of Astronomy © Market House Books Ltd, 2006
cloverleaf
[′klō·vər‚lēf] (civil engineering)
A highway intersection resembling a clover leaf and designed to allow movement and interchange of traffic without direct crossings and left turns.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Command key
On Apple keyboards, a modifier key that was originally the "Apple key." Like the Control and Option keys, Command is pressed along with a letter or digit key to peform a function. The Command key is sometimes used like the Control key in Windows; for example, Command-P and Control-P print a document. However, the Mac's Option key is also used for Windows Control key functions. See Control key. |
| The "Apple" Key |
|---|
| The Mac Command key is identified by its apple or cloverleaf symbols; in this case both. The cloverleaf is also known as the squiggle, pretzel and rugbeater. |
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