• synonyms


[dih-rek-shuh-nl, dahy-]
See more synonyms for directional on Thesaurus.com
  1. of, relating 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, relating to, or providing guidance or leadership.
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Origin of directional

First recorded in 1605–15; direction + -al1
Related formsdi·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. 2018

British Dictionary definitions for undirectional


  1. of or relating to a spatial direction
  2. 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
  3. physics electronics
    1. concentrated in, following, or producing motion in a particular direction
    2. indicating direction
  4. indicating the direction something, such as a fashion trend, might takedirectional fashion looks
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Derived Formsdirectionality, 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