abranchialism

noun
abran·chi·al·ism
plural -s

Definition of abranchialism 

: the condition of being without gills (as certain mollusks of the genus Firoloida)

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First Known Use of abranchialism

1902, in the meaning defined above

History and Etymology for abranchialism

abranchial + -ism

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The first known use of abranchialism was in 1902

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