from the GNU version of the Collaborative International Dictionary of English
- n.pl. A division of shrimplike Thoracostraca in which each of the thoracic legs has a long fringed upper branch (exopodite) for swimming.
from The Century Dictionary and Cyclopedia
- n. An Aristotelian group of birds, approximately equivalent to the Linnean Grallæ, or waders.
- n. A suborder or similar group of long-tailed stalkeyed crustaceans, having a small cephalothorax, a large abdomen, and the pereiopods or thoracic legs apparently cleft or double by reason of the great development of exopodites, which are as large as the endopodites.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. in former classifications a division of Malacostraca; superseded by the orders Mysidacea and Euphausiacea
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