from The Century Dictionary and Cyclopedia
- Same as platoid: correlated with cestode, trematode, and nematode.
- n. Any platode worm; any member of the phylum Platyhelminthes.
Sorry, no etymologies found.
Even then the egg was first a gastraea-egg, then a platode-egg, then a vermalia-egg, and chordonia-egg; later still acrania-egg, then fish-egg, amphibia-egg, reptile-egg, and finally bird's egg.
Among these worms we find some important forms that show considerable advance in organisation from the platode to the chordonia stage.