Definitions
from The Century Dictionary.
- noun One of the Dibranchiata.
from the GNU version of the Collaborative International Dictionary of English.
- noun a cephalopod having two gills; a member of the Dibranchiata.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun cephalopods having two gills
Etymologies
Sorry, no etymologies found.
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Examples
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Now the four-gilled kinds (judging from the only existing form, the nautilus) had the auditory organ in a very inferior condition of development to what we find in the dibranch; thus we have not only evidence of the independent high development of the organ in the former, but also evidence pointing towards a certain degree of comparative rapidity in its development.
On the Genesis of Species St. George Mivart
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Thus it is probable that some four-gilled form was the progenitor of the dibranch cephalopods.
On the Genesis of Species St. George Mivart
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