Having or relating to two gills, as in certain cephalopod mollusks.
From di- (two) + branchia (gill) + -ate (adjective suffix). This adjective form emerged in zoological literature to describe the characteristic two-gill anatomy of squid and octopuses.
This word shows how biologists create precise language—instead of saying 'has two gills,' they compress it into one adjective that instantly tells other scientists exactly what you're talking about.
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