dipnoi

2 definitions found

dipnoi - Collaborative International Dictionary of English v.0.48 :

  Dipnoi \Dip"no*i\, n. pl. [NL., fr. Gr. ? ? with two breathing
     apertures; di- = di`s- twice + ? breath.] (Zool.)
     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.
     [1913 Webster]

dipnoi - WordNet (r) 2.1 (2005) :

  Dipnoi
      n 1: 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
           ]