Radio-wave
noun, Electricity.
1.
an electromagnetic wave having a wavelength between 1 millimeter and 30,000 meters, or a frequency between 10 kilohertz and 300,000 megahertz.
noun
1.
an electromagnetic wave of radio frequency
radio wave
A very low frequency electromagnetic wave (from roughly 30 kilohertz to 100 gigahertz). Radio waves are used for the transmission of radio and television signals; the microwaves used in radar and microwave ovens are also radio waves. Many celestial objects, such as pulsars, emit radio waves. See more at electromagnetic spectrum.
Read Also:
- Radio-window
noun, Astronomy. 1. the range of wavelengths at which the earth’s atmosphere is transparent to radio waves. noun 1. 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
- Radisectomy
radisectomy ra·di·sec·to·my (rā’dĭ-sěk’tə-mē) n. Variant of radectomy.
- Radish
[rad-ish] /ˈræd ɪʃ/ noun 1. the crisp, pungent, edible root of the plant, Raphanus sativus, of the mustard family, usually eaten raw. 2. the plant itself. /ˈrædɪʃ/ noun 1. any of various plants of the genus Raphanus, esp R. sativus of Europe and Asia, cultivated for its edible root: family Brassicaceae (crucifers) 2. the root […]
- Radisson
[ra-dee-sawn] /ræ diˈsɔ̃/ noun 1. Pierre Esprit [es-pree] /ɛs pri/ (Show IPA), 1636?–1710? French fur trader and explorer in Canada.
- Radium
[rey-dee-uh m] /ˈreɪ di əm/ noun 1. Chemistry. a highly radioactive metallic element whose decay yields gas and alpha rays. Symbol: Ra; atomic weight: 226; atomic number: 88. 2. a lustrous rayon or silk fabric constructed in plain weave and used in women’s apparel, lining, and drapery. /ˈreɪdɪəm/ noun 1. n. radioactive metallic element, 1899, […]