entomostraca Meaning, Definition & Usage

  1. noun in some older classifications includes the Branchiopoda and Copepoda and Ostracoda and Cirripedia; no longer in technical use
    subclass Entomostraca.

WordNet

En`to*mos"tra*ca noun plural
Etymology
NL., fr. Gr. cut in pieces + burnt clay, the hard shell of Testacea.
Definitions
  1. (Zoöl.) One of the subclasses of Crustacea, including a large number of species, many of them minute. The group embraces several orders; as the Phyllopoda, Ostracoda, Copepoda, and Pectostraca. See Copepoda, Phyllopoda, and Cladocera.

Webster 1913