Meaning of APERTURE in English

1. In a directional antenna , the portion of a plane surface very near the antenna normal to the direction of maximum radiant intensity , through which the major part of the radiation passes. ( 188 ) 2. In an acoustic device that launches a sound wave, the passageway, determined by the size of a hole in the inelastic material and the wavelength . [After 2196 ]

Telecommunication standard terms English vocab.      Английский словарь стандартных телекоммуникационных терминов.