dipnoan

dip·no·an  (dpn-n)

n.

Any of various fishes of the group Dipnoi, which includes the lungfishes, characterized by modified lungs that enable them to breathe atmospheric air.

adj.

Of or belonging to the Dipnoi.

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[From New Latin Dipno, order name, from Greek dipnooi, pl. of dipnoos, having two apertures for breathing : di-, two; see di-¹ + pno, breath (from pnein, to breathe; see pneu- in Indo-European roots).]

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dipnoan [dɪpˈnəʊən]

adj

(Life Sciences & Allied Applications / Animals) of, relating to, or belonging to the Dipnoi, a subclass of bony fishes comprising the lungfishes

n

(Life Sciences & Allied Applications / Animals) any lungfish

[from New Latin Dipnoi, from Greek dipnoos, double-breathing, from di-¹ + pnoē breathing, air, from pnein to breathe]