The Britannica Dictionary
mobile search
Home
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
×
Britannica Homepage
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
The Britannica Dictionary
comet
1 ENTRIES FOUND:
comet
(noun)
comet
/
ˈ
kɑːmət/
noun
plural
comets
comet
/
ˈ
kɑːmət/
noun
plural
comets
Britannica Dictionary definition of COMET
[
count
]
:
an object in outer space that develops a long, bright tail when it passes near the sun
ASK THE EDITOR
Are school subjects proper nouns or common nouns?
See the answer »
QUIZZES
Vocabulary Quiz
Test your word power
Take the Quiz »
Name That Thing
Take our visual quiz
Test Your Knowledge »
WORD OF THE DAY
defiant
:
refusing to obey something or someone
Learn More »
