arthrostraca Meaning, Definition & Usage

Ar*thros"tra*ca noun plural
Etymology
NL., fr. Gr. joint + a shell.
Definitions
  1. (Zoöl.) One of the larger divisions of Crustacea, so called because the thorax and abdomen are both segmented; Tetradecapoda. It includes the Amphipoda and Isopoda.

Webster 1913