[ ʌɪ'ɒnəsfɪə ]
■ noun the layer of the atmosphere above the mesosphere, which contains a high concentration of ions and electrons and is able to reflect radio waves.
Derivatives
ionospheric adjective
[ ʌɪ'ɒnəsfɪə ]
■ noun the layer of the atmosphere above the mesosphere, which contains a high concentration of ions and electrons and is able to reflect radio waves.
Derivatives
ionospheric adjective
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004