from The Century Dictionary and Cyclopedia
- One of two primary groups into which Huxley divides the deciduate Mammalia (the other being Zonaria, which see), consisting of those Deciduata which have a discoidal placenta.
- A group of echinoderms.
- A family of peripylarian Radiolaria having the shell and central capsule discoid or lenticular. It includes Cenodiscus, Phacodiscus, Coccodiscus, and other genera.
Sorry, no etymologies found.