- a cloud of a class characterized by thin white filaments or narrow bands and a composition of ice crystals: of high altitude, about 20,000–40,000 feet (6000–12,000 meters).
- a cirriform cloud.
- a filament or slender appendage serving as a foot, tentacle, barbel, etc.
- the male copulatory organ of flatworms and various other invertebrates.
Origin of cirrus
Words nearby cirrus
How to use cirrus in a sentence
Some research groups have also explored whether releasing certain particles could break up cirrus clouds, which trap heat against the Earth, or make low-lying marine clouds more reflective.The US government is developing a solar geoengineering research plan|James Temple|July 1, 2022|MIT Technology Review
Both the ancient and the modern creatures have eight arms bearing suckers flanked by hairlike cirri.Vampire squid are gentle blobs. But this ancestor was a fierce hunter|Carolyn Gramling|June 23, 2022|Science News
This cloud may either evaporate or disappear, or it may pass to the cirrus, or sink lower and become a cirro-stratus.
The Cirrus occurs in very great variety, and in some states of the air is constantly changing.
In dry weather the cirrus is sharp, defined, and fibrous in texture, the lines vanishing off in fine points.
Filling the vision to the south-west was Aurora Peak, in crisp silhouette against a glorious radiant of cirrus cloud.The Home of the Blizzard|Douglas Mawson
Ventral tentacular cirrus of second somite of a thin or foliaceous and asymmetrical form.
British Dictionary definitions for cirrus
- a slender tentacle or filament in barnacles and other marine invertebrates
- a hairlike structure in other animals, such as a filament on the appendage of an insect or a barbel of a fish