from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various free-living chiefly aquatic ciliate flatworms of the class Turbellaria, which includes the common planarians of the genus Dugesia.
- adj. Of or belonging to the Turbellaria.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any flatworm of the class Turbellaria
- adj. Characteristic of these creatures
from the GNU version of the Collaborative International Dictionary of English
- n. One of the Turbellaria. Also used adjectively.
from The Century Dictionary and Cyclopedia
- Causing little currents or vortexes of water by ciliary action, as the more minute members of the class Turbellaria; belonging to this class, as a worm.
- n. A member of the class Turbellaria.
My favorites, however, are the free-living turbellarian worms, of which there are more than 4,000 species: that's about as numerous as all the mammal species put together.
Prey is immobilized by special structures called rhabdoids which enable the turbellarian to swallow the prey whole, in pieces or suck the body fluids out of it.
These are distributed over the body of the turbellarian, and collect waste and feed it into ducts which eventually lead to the exterior through pores.
A simple turbellarian (Rhabdocoelum). m mouth, sd gullet epithelium, sm gullet muscles, d gastric gut, nc renal canals, nm renal aperture, au eye, na olfactory pit.
My favourites, however, are the free-living turbellarian worms, of which there are more than four thousand species: that’s about as numerous as all the mammal species put together.