spectral line

spec·tral line

S s

Definitions of spectral line words

noun spectral line a line in a spectrum due to the absorption or emission of light at a discrete frequency. 1
noun spectral line any of a number of lines in a spectrum produced by the emission of electromagnetic radiation from an excited atom: a spectral line represents the energy difference between two energy levels 0

before 1865

One of the 28% newest English words

First recorded in 1865-70

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

This term is known only to a narrow circle of people with rare knowledge. Only 27% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

This diagram is provided by Google Ngram Viewer

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