radio window


noun Astronomy.

the range of wavelengths at which the earth's atmosphere is transparent to radio waves.

Nearby words

  1. radio telescope,
  2. radio tube,
  3. radio valve,
  4. radio wave,
  5. radio waves,
  6. radio-,
  7. radio-carbon,
  8. radio-collar,
  9. radio-controlled,
  10. radio-telephone

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for radio window

radio window

noun

a gap in ionospheric reflection that allows radio waves, with frequencies in the range 10 000 to 40 000 megahertz, to pass from or into space
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012