cirrus

play
noun cir·rus \ˈsir-əs\

Definition of cirrus

plural

cirri

play \ˈsir-ˌī\
  1. 1 :  tendril

  2. 2 :  a slender usually flexible animal appendage or projection: such asa :  an arm of a barnacleb :  a filament of a crinoidc :  a fused group of cilia functioning like a limb on some protozoansd :  the male copulatory organ of various invertebrate animals

  3. 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

Recent Examples of cirrus from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cirrus.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of cirrus

New Latin, from Latin, curl


CIRRUS Defined for English Language Learners

cirrus

play
noun

Definition of cirrus for English Language Learners

  • : a thin type of cloud that forms high in the sky


CIRRUS Defined for Kids

cirrus

play
noun cir·rus \ˈsir-əs\

Definition of cirrus for Students

plural

cirri

\ˈsir-ī\
  1. :  a thin white cloud of tiny ice crystals that forms at a very high altitude


Medical Dictionary

cirrus

play
noun cir·rus \ˈsir-əs\

Medical Definition of cirrus

plural

cirri

\ˈsi(ə)r-ˌī\play
  1. :  a slender usually flexible animal appendage: asa:  a fused group of cilia functioning like a limb on some protozoansb:  the male copulatory organ of some worms

Illustration of cirrus



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