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Definition of Amphipoda
1. Noun. Small flat-bodied semiterrestrial crustaceans: whale lice; sand-hoppers; skeleton shrimp.
Generic synonyms: Animal Order
Group relationships: Malacostraca, Subclass Malacostraca
Member holonyms: Amphipod, Family Orchestiidae, Orchestiidae, Caprella, Genus Caprella, Cyamus, Genus Cyamus
Definition of Amphipoda
1. n. pl. A numerous group of fourteen -- footed Crustacea, inhabiting both fresh and salt water. The body is usually compressed laterally, and the anterior pairs or legs are directed downward and forward, but the posterior legs are usually turned upward and backward. The beach flea is an example. See Tetradecapoda and Arthrostraca.
Medical Definition of Amphipoda
1.