directional

[ dih-rek-shuh-nl, dahy- ]
/ dɪˈrɛk ʃə nl, daɪ- /

adjective

of, relating to, or indicating direction in space.
Radio. adapted for determining the direction of signals received, or for transmitting signals in a given direction: a directional antenna.
of, relating to, or providing guidance or leadership.

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Origin of directional

First recorded in 1605–15; direction + -al1

OTHER WORDS FROM directional

di·rec·tion·al·i·ty, noundi·rec·tion·al·ly, adverbun·di·rec·tion·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for directional

British Dictionary definitions for directional

directional
/ (dɪˈrɛkʃənəl, daɪ-) /

adjective

of or relating to a spatial direction
electronics
  1. having or relating to an increased sensitivity to radio waves, sound waves, nuclear particles, etc, coming from a particular direction
  2. (of an aerial) transmitting or receiving radio waves more effectively in some directions than in others
physics electronics
  1. concentrated in, following, or producing motion in a particular direction
  2. indicating direction
indicating the direction something, such as a fashion trend, might takedirectional fashion looks

Derived forms of directional

directionality, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012