2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Dipnoi \Dip"no*i\, n. pl [NL., fr Gr ? ? with two breathing
apertures; di- = di`s- twice + ? breath.] (Zo["o]l.)
A group of ganoid fishes, including the living genera
{Ceratodus} and {Lepidosiren}, which present the closest
approximation to the Amphibia. The air bladder acts as a
lung, and the nostrils open inside the mouth. See
{Ceratodus}, and Illustration in Appendix.
From WordNet r 1.6 [wn]:
Dipnoi
n : bony fishes of the southern hemisphere that breathe by a
modified air bladder as well as gills; sometimes
classified as an order of Crossopterygii [syn: {Dipnoi},
{subclass Dipnoi}]
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