- pl. cir′ri· Biol.
- a plant tendril
- a flexible, threadlike tentacle or appendage, as the feelers of certain organisms
- a cone-shaped cluster of fused cilia, occurring in many species of infusorians
- pl. cir′rusMeteorol. the type of white cloud that resembles a wispy filament, found at high altitudes and consisting of ice crystals
Origin of cirrusL, a lock, curl, tendril
- A high-altitude cloud composed of narrow bands or patches of thin, generally white, fleecy parts.
- Biology a. A tendril.b. A slender flexible appendage, such as a tuft of fused cilia of certain protozoans or one of the feathery appendages of a barnacle.
Origin of cirrusLatin curl of hair
From Latin cirrus (“curl”).