What is the definition of cirrus in science?

Answer 1

In science, particularly in meteorology, "cirrus" refers to a type of high-altitude cloud that is thin, wispy, and composed primarily of ice crystals. These clouds typically form at altitudes above 20,000 feet (6,000 meters) and are often associated with fair weather, although they can indicate an approaching storm. Cirrus clouds can be identified by their feather-like appearance and are part of the cloud classification system established by Luke Howard in the early 19th century.