Planarian

//pləˈnɛə.ɹi.ən// noun

Definitions

Noun
  1. 1
    Any of various flatworms of the order Tricladida living in marine, freshwater, or terrestrial environments.
  2. 2
    free-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts wordnet

Etymology

From translingual Planaria (genus) (from Late Latin plānārius (“lying on a plane”), from Latin plānum) + -an.

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