comet tail
Pronunciation
Noun
A2 Elementary
Quick answer
The long, glowing stream of dust and gas that trails behind a comet as it nears the sun.
Usage notes
A comet's tail always points away from the sun, not behind the comet's direction of travel.
Test yourself
In your own words, what does "comet tail" mean?
The long, glowing stream of dust and gas that trails behind a comet as it nears the sun.
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