Meanings
nounphotoheliometer (plural photoheliometers)
plural photoheliometers
- historicalA double-lens instrument for measuring slight variations of the Sun's diameter by photography, based on the common chord of two overlapping images.
Origin
Cite this entry
APA
photoheliometer. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/photoheliometer
MLA
“photoheliometer.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/photoheliometer. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “photoheliometer,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/photoheliometer.
Source: photoheliometer on Wiktionary, CC BY-SA 4.0.