directionality

directional

[dih-rek-shuh-nl, dahy-]
adjective
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.

Origin:
1605–15; direction + -al1

directionality, noun
directionally, adverb
undirectional, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
directional (dɪˈrɛkʃənəl, daɪ-)
 
adj
1.  of or relating to a spatial direction
2.  electronics
 a.  having or relating to an increased sensitivity to radio waves, sound waves, nuclear particles, etc, coming from a particular direction
 b.  (of an aerial) transmitting or receiving radio waves more effectively in some directions than in others
3.  physics, electronics
 a.  concentrated in, following, or producing motion in a particular direction
 b.  indicating direction
4.  indicating the direction something, such as a fashion trend, might take: directional fashion looks
 
direction'ality
 
n

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