Directional radio equipment receives or sends stronger signals in particular directions. She had a very directional look. Quinoxalines block the mechanism of directional selectivity in ganglion cells of the rabbit retina.
Define directional. directional synonyms, directional pronunciation, directional translation, English dictionary definition of directional. adj. 1. Of or indicating direction: an automobile's directional lights.
Definition of directional adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
a purpose or guiding orientation; focus:[uncountable] He seems to lack direction in his life. di•rec•tion•al, adj. [before a noun]: I turned on the car's right directional signal. See -rect-.
Definitions of directional adjective relating to or indicating directions in space “a directional microphone” see more adjective relating to direction toward a (nonspatial) goal
There are six meanings listed in OED's entry for the adjective directional, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.