This word is acceptable for play in the UK dictionary that is being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The black hole thought to form following the gravitational collapse of a massive star

"The collapsar was a black pinprick against the filtered image of the huge star, and then a dot, and then a rapidly swelling ball, and then there was the odd twisting feeling and we were suddenly in dark deep space."

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mailbomb    passenger-train    ageorgian    bungee    selenocysteine