O star

[ oh -stahr ]

/ ˈoʊ ˌstɑr /

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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.

QUIZ

ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?

We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.

Question 1 of 8

Which of the following words describes “sky blue”?

navy

beryl

azure

TAKE THE QUIZ TO FIND OUT

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Compare spectral type.

Words nearby O star

osso bucco, ossobuco, ossuarium, ossuary, OST, O star, oste-, osteal, ostealgia, ostectomy, osteichthyan

How to use O star in a sentence

Former Red Sox star Curt Schilling says his politics are keeping him out of Cooperstown.
Conservative Curt Says His Politics, Not His Pitching, Kept Him Out of the Hall of Fame|Ben Jacobs|January 9, 2015|DAILY BEAST
It was seen by a small delegation of star-struck prelates and dignitaries who later described the film as “moving.”
Pope Francis Has the Pleasure of Meeting Angelina Jolie for a Few Seconds|Barbie Latza Nadeau|January 8, 2015|DAILY BEAST
I just recently rewatched all six Star Wars movies the other day… Oh wow, from the beginning?
Patton Oswalt on Fighting Conservatives With Satire|William O’Connor|January 6, 2015|DAILY BEAST
The star announces he is to marry his 27-year-old boyfriend.
Meet Stephen Fry’s Future Husband (Who Is Less Than Half His Age)|Tom Sykes|January 6, 2015|DAILY BEAST

Real Housewives of New Jersey star Teresa Giudice turned herself in to serve a 15-month sentence for bankruptcy fraud.
How a ‘Real Housewife’ Survives Prison: ‘I Don’t See [Teresa Giudice] Having a Cakewalk Here’|Michael Howard|January 6, 2015|DAILY BEAST
Sleek finds it far harder work than fortune-making; but he pursues his Will-o'-the-Wisp with untiring energy.
The Pit Town Coronet, Volume I (of 3)|Charles James Wills
O death, how bitter is the remembrance of thee to a man that hath peace in his possessions!
The Bible, Douay-Rheims Version|Various
D'o l'on peut aussy veoir, quelle esperance il y a de planter une belle chrestient par tels evangelistes.
The Jesuit Relations and Allied Documents, Vol. II: Acadia, 1612-1614|Various
That they may know thee, as we also have known thee, that there is no God beside thee, O Lord.
The Bible, Douay-Rheims Version|Various
I had no idea who they were, as the Grand Duke was in morning costume, and had no star or decoration to distinguish him.
Music-Study in Germany|Amy Fay