spectral type
spec·tral type
S s Transcription
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- US Pronunciation
- US IPA
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- [spek-truh l tahyp]
- /ˈspɛk trəl taɪp/
-
- US Pronunciation
- US IPA
-
- [spek-truh l tahyp]
- /ˈspɛk trəl taɪp/
Definitions of spectral type words
- noun spectral type a category for classifying a star, as A star or G star, according to features of its spectrum, as its shape as a function of temperature and wavelength and its absorption spectrum, that indicate the surface temperature of the star and the presence of particular atoms or molecules in its outer layers: principal types are spectral types O, B, A, F, G, K, and M. 1
- noun spectral type any of various groups into which stars are classified according to characteristic spectral lines and bands. The most important classification (Harvard classification) has a series of classes O, B, A, F, G, K, M, the series also being a scale of diminishing surface temperature 0
Information block about the term
Origin of spectral type
First appearance:
before 1920 One of the 12% newest English words
First recorded in 1920-25
Historical Comparancy
Parts of speech for Spectral type
noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
spectral type popularity
This term is known only to a narrow circle of people with rare knowledge. Only 7% 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.
spectral type usage trend in Literature
This diagram is provided by Google Ngram ViewerSee also
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