from The Century Dictionary and Cyclopedia
- The xiphosures or horseshoe crabs regarded as an order of Arachnida.
- In some systems of classification, a subclass or suborder of Crustacea, corresponding to Entomostraca in a broad sense; the lower series of the crustaceans, contrasted with the malacostracans or Thoracipoda.
- An exact synonym of Arthropoda considered as a prime division of a phylum Appendiculata (which see).
Sorry, no etymologies found.