dipnoanadj.n.
/ˈdɪpnəʊən/ Zoology.
A. adj.
Belonging to the Dipnoi, a sub-class or order of fishes, having two kinds of respiratory organs, gills and lungs.
ΘΚΠ
the world > animals > fish > class Osteichthyes or Teleostomi > [adjective] > belonging to Dipnoi
dipnoid1878
dipnoous1881
dipnoan1886
dipneustal1892
1886 Athenæum 18 Dec. 830/2 A paper on the development..of the ovum in the dipnoan fishes.
B. n.
A fish belonging to this order.
ΘΚΠ
the world > animals > fish > class Osteichthyes or Teleostomi > [noun] > order Dipnoi > member of (lung-fish)
dipnoid1878
dipnoan1883
lungfish1883
1883 Athenæum 7 Apr. 447/1 Prof. Huxley came to the conclusion that..to separate the elasmobranchs, ganoids, and dipnoans into a group, apart from and equivalent to the teleosteans, was inconsistent with the plainest anatomical relations of these fishes.
This entry has not yet been fully updated (first published 1896; most recently modified version published online June 2018).
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adj.n.1883