from the GNU version of the Collaborative International Dictionary of English
- n.pl. Same as arthrostraca.
from The Century Dictionary and Cyclopedia
- Fourteen-footed crustaceans; an order of Crustacea corresponding to Arthrostraca. The multiarticulate cephalothorax has seven thoracic segments, each of which bears a pair of legs. The order includes the isopods and amphipods.
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