Share this entry

spectral type Line breaks: spec|tral type
(also spectral class)

Definition of spectral type in English:


The group in which a star is classified according to its spectrum, especially using the Harvard classification.
Example sentences
  • Such an association is named ‘OB’ because these stars have O and B spectral types.
  • Fomalhaut is only moderately Sun-like; its spectral class is A 3 Va, it's 1.7 times the Sun's diameter, has 2.3 times its mass, and is 13 times as bright.
  • Suppose we wanted to find one like the Sun: say, between spectral types F5 and K5, not part of a double or multiple system, and at least a billion years old (to let things settle down a bit).

Definition of spectral type in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day whippersnapper
Pronunciation: ˈwɪpəsnapə
a young, inexperienced person considered presumptuous or overconfident...