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Glossary of Invertebrates Terms
beginning with letter U
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umbrella Tweet Definition of umbrella Like Definition of umbrella on Facebook
noun 
  1. Cloth-covered frame used for protection against rain or sun.
  2. Generally, anything that provides protection. (The fighters provide a defensive air umbrella over the battle group.)
  3. Something that covers a wide range of concepts, ideas, purposes, etc. (The test facility was established under the umbrella of the company's quality program.)
  4. The main body of a jellyfish, excluding the tentacles.
     
urchin Tweet Definition of urchin Like Definition of urchin on Facebook
noun 
  1. A mischievous child.
  2. street kid, a child from from a poor neighborhood.
  3. (archaic) A hedgehog.
     
uropod Tweet Definition of uropod Like Definition of uropod on Facebook
noun 
  1. (anatomy) either of the two posterior abdominal appendages of the lobster, shrimp and some other crustaceans
     

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