Definition of Natantia
: a suborder of Decapoda comprising crustaceans (as the shrimps, prawns, and related forms) that have the rostrum usually long, the first antenna with a stylocerite, the second antennal scale larger, and the abdomen well-developed, somewhat compressed laterally, and frequently flexed ventrally — compare reptantia
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Origin and Etymology of natantia
New Latin, from Latin, neuter plural of natant-, natans, present participle of natare
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