O star

[ oh stahr ]
/ ˈoʊ ˌstɑr /

noun

a very hot, massive, blue star of spectral type O, having a surface temperature between 30,000 and 50,000 K and an absorption spectrum with few lines, though the Balmer series of hydrogen lines is present and lines of ionized helium are detectable.

QUIZZES

This Word Of The Day Quiz Is Far From Thersitical
Have you mastered the meaning of phronesis? How about plethoric? Take the quiz on the words from the week of February 17 to 23 to find out.
Question 1 of 7
Lincolnesque
Compare spectral type.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020