Cite
 

Dictionary


di•rec•tion•al



Pronunciation: (di-rek'shu-nl, dī-), [key]
adj.
1. of, pertaining to, or indicating direction in space.
2. Radio.adapted for determining the direction of signals received, or for transmitting signals in a given direction: a directional antenna.
3. of, pertaining to, or providing guidance or leadership.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

directiondirectional derivative
See also:

 

Related Content