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Word of the day
for February 13
shortwave adj (radio, telecommunications)
  1. Of a radio wave: having a wavelength of between 10 and 100 metres, corresponding to a frequency between 3 and 30 megahertz.
  2. Of radio equipment: capable of receiving or transmitting radio signals at wavelengths in the above range.

shortwave adv

  1. (radio, telecommunications) Using radio waves having wavelengths of between 10 and 100 metres, corresponding to frequencies between 3 and 30 megahertz.

shortwave n

  1. (physics, telecommunications) An electromagnetic wave with a relatively short wavelength; specifically, one with a wavelength generally between 10 and 100 metres, corresponding to a frequency between 3 and 30 megahertz.
    1. (meteorology) Downward radiation in the shortwave (noun sense 1) frequency range which enters the Earth's atmosphere.
    2. (radio, telecommunications)
      1. A waveband comprising radio waves in the shortwave (noun sense 1) frequency range, especially when used in broadcasting.
      2. In full shortwave radio: a radio which is able to receive radio waves in the shortwave (noun sense 1) waveband.

Today is World Radio Day, which is recognized by the United Nations to highlight the importance of radio for sharing information, promoting diversity of ideas, and reaching remote communities and vulnerable people, and its role in emergency communication during disasters. United Nations Radio was established on this day 80 years ago in 1946.

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Foreign word of the day  in Iraqi Arabic
عمبة (ʕamba) noun
  1. amba (a blended mash of mainly pickled mango, used as a side dish or condiment)

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