English dictionary
tectibranchiata
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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An order, or suborder, of gastropod Mollusca in which the gills are usually situated on one side of the back, and protected by a fold of the mantle. When there is a shell, it is usually thin and delicate and often rudimentary. The aplysias and the bubble shells are examples.
Source: webster1913