First Known Use: 1708
Dictionary
cirrus
noun cir·rus \ˈsir-əs\
: a thin type of cloud that forms high in the sky
plural cir·ri \ˈsir-ˌī\
Full Definition of CIRRUS
1
: tendril
2
: a slender usually flexible animal appendage or projection: as a : an arm of a barnacle b : a filament of a crinoid c : a fused group of cilia functioning like a limb on some protozoans d : the male copulatory organ of various invertebrate animals
3
: a high wispy white cloud usually of minute ice crystals formed at altitudes between about 20,000 and 40,000 feet (6,000 and 12,000 meters) — see cloud illustration
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Origin of CIRRUS
New Latin, from Latin, curl
CIRRUS Defined for Kids
cirrus
noun cir·rus \ˈsir-əs\
plural cir·ri \ˈsir-ī\
Definition of CIRRUS for Kids
: a thin white cloud of tiny ice crystals that forms at a very high altitude
Medical Dictionary
cirrus
noun cir·rus \ˈsir-əs\
plural cir·ri \ˈsi(ə)r-ˌī\
Medical Definition of CIRRUS
: a slender usually flexible animal appendage: as a : a fused group of cilia functioning like a limb on some protozoans b : the male copulatory organ of some worms
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