Meaning of DIRECTIONAL in English

DIRECTIONAL

adj.

Pronunciation: -shn ə l, -sh ə -n ə l

Function: adjective

Date: 1842

1 : of, relating to, or indicating direction in space: a : suitable for detecting the direction from which radio signals come or for sending out radio signals in one direction only <a directional antenna> b : operating most effectively in a particular direction <a directional microphone>

2 : relating to direction or guidance especially of thought or effort

– di · rec · tion · al · i · ty \ - ˌ rek-sh ə - ' na-l ə -t ē \ noun

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.