Fraunhofer lines 
Fraunhofer lines
Definition
Fraun·ho·fer lines (fro̵un′hō′fər)
noun
the dark lines visible in the spectrum of the sun or a star
Etymology: after Joseph von Fraunhofer (1787-1826), Bavarian optician, who first mapped them accurately
Browse dictionary entries near Fraunhofer lines
- ‹ fraught
- ‹ fraudulent financial reporting
- ‹ fraudulent conveyance
- ‹ fraudulent concealment
- ‹ fraudulent
- ‹ fraud
- ‹ Frau
- ‹ fratricide
- ‹ fraternize
- ‹ fraternity
- fraxinella ›
- fray ›
- Frazer ›
- frazil ›
- frazil (ice) ›
- frazzle ›
- freak ›
- freak show ›
- freaking ›
- freakish ›
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