Planarian Definition
 plə-nârē-ən 
    noun
  
 Any of a class (Turbellaria) of small, soft-bodied, free-living flatworms moving by means of cilia.
 Webster's New World 
Any of various small, chiefly freshwater flatworms of the order Tricladida, having a soft, broad, ciliated body, a three-branched digestive cavity, and the ability to regenerate body parts.
 American Heritage Medicine 
Synonyms: 
  
- planaria
Other Word Forms of Planarian
Noun
Singular:
 planarianPlural:
 planariansOrigin of Planarian
-  From New Latin Plānāria genus name from feminine of Late Latin plānārius on level ground from plānus flat pelə-2 in Indo-European roots From American Heritage Dictionary of the English Language, 5th Edition 
-  From New Latin planaria (from Late Latin planarius (“lying on a plane"), from Latin planum) +"Ž -an From Wiktionary 
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