Definition of Tanaidacea
: a small order of malacostracan crustaceans (division Peracarida) often included in the Isopoda and intermediate in character between that order and the Cumacea
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Origin and Etymology of tanaidacea
New Latin, from Tanaid-, Tanais, genus of crustaceans (from Latin Tanais the river Don, from Greek Tanaïs) + -acea
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