from the GNU version of the Collaborative International Dictionary of English
- n.pl. A division of acalephs or jellyfishes, including most of the large disklike species.
from The Century Dictionary and Cyclopedia
- The discoidal hydrozoans, a subclass of Hydrozoa, comprising most of the organisms known as jelly-fishes, sea-jellies, or sea-nettles.
- An order of suctorial worms, the leeches: so called from their sucking-disks. See Hiru-dinea.
Sorry, no etymologies found.