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
cirrus
1 ENTRIES FOUND:
cirrus
(noun)
cirrus
/
ˈ
sirəs/
noun
cirrus
/
ˈ
sirəs/
noun
Britannica Dictionary definition of CIRRUS
[
noncount
]
technical
:
a thin type of cloud that forms high in the sky
ASK THE EDITOR
What is the difference between
over
the weekend,
on
the weekend, and
at
the weekend?
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
traverse
:
to move across (an area) (
somewhat formal
)
Learn More »
