noun
(physics) a spectrum of radiation caused by electron transitions within an atom; the series of spectrum lines is characteristic of the element
• Topics: ↑physics, ↑natural philosophy
• Hypernyms: ↑spectrum
• Part Meronyms: ↑fine structure
* * *
a series of lines with characteristic frequencies which show the range of ↑radiation that is characteristic of a chemical element
Useful english dictionary. 2012.