SCIENCE|natural and applied sciences|earth sciences
- crios tosta Tagairt Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- aural null
- en
- Sainmhíniú a null detected by listening for a minimum or the complete absence of an audible signal Tagairt Multilingual Aeronautical Dictionary(AGARD,1980)