1 Definition in the Yahoo! Kids Dictionary
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"KIDS HOME STUDY REFERENCE DICTIONARY HOME WORD: cirrus

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cir·rus  audio 
(sîrs)  See the pronunciation key 

NOUN:
pl. cir·ri
  1. A high-altitude cloud composed of narrow bands or patches of thin, generally white, fleecy parts.
  2. Biology
    1. A tendril or similar part.
    2. A slender flexible appendage, such as the fused cilia of certain protozoans.

ETYMOLOGY:
Latin, curl of hair
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