'Planarian' definitions:

Definition of 'planarian'

(from WordNet)
noun
Free-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts [syn: planarian, planaria]

Definition of 'Planarian'

From: GCIDE
  • Planarian \Pla*na"ri*an\, n. (Zool.) One of the Planarida, or Dendroc[oe]la; any turbellarian worm. -- {Pla*na"ri*an}, a. [1913 Webster]

Definition of 'Planarian'

From: GCIDE
  • Planarian \Pla*na"ri*an\, n. (Zool.) One of the Planarida, or Dendroc[oe]la; any turbellarian worm. -- {Pla*na"ri*an}, a. [1913 Webster]