Meanings
nounriometer (plural riometers)
plural riometers
- An instrument used to quantify the amount of electromagnetic wave ionospheric absorption in the atmosphere.
Origin
Short for relative ionospheric opacity meter.
Full word history & related roots →Cite this entry
APA
riometer. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/riometer
MLA
“riometer.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/riometer. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “riometer,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/riometer.
Source: riometer on Wiktionary, CC BY-SA 4.0.