from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various parasitic and nonparasitic worms of the phylum Platyhelminthes, such as a tapeworm or a planarian, characteristically having a soft, flat, bilaterally symmetrical body and no body cavity. Also called platyhelminth.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of very many parasitic or free-living worms, of the phylum Platyhelminthes, having a flattened body with no skeleton or body cavity.
from the GNU version of the Collaborative International Dictionary of English
- n. Any worm belonging to the Platyhelminthes; also, sometimes applied to the planarians.
from The Century Dictionary and Cyclopedia
- n. A platyhelminth; one of the Platyhelminthes, as a tapeworm: a name applied to animals of the planarian group. See cut under Dendrocæla.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. parasitic or free-living worms having a flattened body
Sorry, no etymologies found.
Or of the Spirometra mansoni, commonly called a flatworm, which can grow up to fourteen inches long and take up residence in your brain, where it feeds upon your cerebral matter until you are reduced to a vegetative state?
The flatworm is the simplest living multicellular animal to have bilateral symmetry, and its primeval ancestors must have been the first to develop this.
The color of the flatworm is a very dark brown and the stomach with a thin pale line.
Schistosomiasis is caused by the larvae of a flatworm which is released into water by infected snails.
Nautilus ... has an eye that is intermediate in quality between flatworm and human.
A flatworm has an eye that, by any sensible measure, is less than half a human eye.
Unlike the flatworm eye, which can detect light and shade but see no image, the Nautilus 'pinhole camera' eye makes a real image; but it is a blurred and dim image compared to ours.
The study also concluded that the combination of atrazine and phosphate--widely used in fertilizer for corn and sorghum production--significantly increased the presence of the flatworm; and
Another study, which found that atrazine is a strong predictor of parasitic flatworm larvae in frogs, which can cause severe limb deformities and kidney damage to amphibians, including in declining populations of northern leopard frogs.
After all, making a light bulb or air conditioner smart is about as difficult as training a flatworm to avoid the light.