A flatworm. A relatively simple wormlike animal with a flattened ribbonlike body, a distinct head end, and a mouth located more or less centrally on the underside of the body [23].

A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. . 2002.

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  • Planarian — Pla*na ri*an, n. (Zo[ o]l.) One of the Planarida, or Dendroc[oe]la; any turbellarian worm. {Pla*na ri*an}, a. [1913 Webster] …   The Collaborative International Dictionary of English

  • planarian — [plə ner′ē ən] n. [< ModL Planaria, name of the genus < LL planarius, flat < L planus,PLANE2] any of an order (Tricladida) of small, soft bodied, free living, turbellarian flatworms moving by means of cilia …   English World dictionary

  • Planarian — Polycelis felina, a freshwater planarian Planarian is the common name given to many non parasitic flatworms of Turbellaria class.[1] It is also the common name for a member of the genus Planaria within the family Planariidae. Sometimes it also …   Wikipedia

  • planarian — /pleuh nair ee euhn/, n. Zool. any of various free swimming, mostly freshwater flatworms of the class Turbellaria, having an undulating or sluglike motion: popular in laboratory studies for the ability to regenerate lost parts. [1885 60; < NL… …   Universalium

  • planarian — pla·nar·i·an ē ən n any of the family Planariidae or order Tricladida comprising small soft bodied ciliated mostly aquatic turbellarian worms planarian adj * * * pla·nar·i·an (plə narґe ən) any of the free living flatworms of the class… …   Medical dictionary

  • planarian — noun Etymology: New Latin Planaria Date: circa 1858 triclad; especially any of various dark colored freshwater triclad flatworms (family Planariidae) with two eyespots and a triangular head …   New Collegiate Dictionary

  • planarian — noun Any of various freshwater flatworms, of the family Planariidae. See Also: planar …   Wiktionary

  • planarian — plÉ™ neÉ™rɪən n. type of flatworm which lives in water …   English contemporary dictionary

  • planarian — [plə nɛ:rɪən] noun Zoology a free living aquatic flatworm. [Order Tricladida.] Origin C19: from mod. L. Planaria (genus name), feminine of L. planarius lying flat …   English new terms dictionary

  • planarian — pla·nar·i·an …   English syllables

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