Definition of "planaria" []

• Plural form of planarium. (noun)

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• "This experiment involved one of the most primitive forms of life, a type of worm called planaria."
• "Although animals such as planaria and starfish can regrow virtually any part of their bodies, humans have restricted regenerative capabilities."
• "July 28th, 2009 3: 39 pm ET yeah, fascinating like planaria ... but I wouldn't put one of those in office either ..."