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dipnoan

[dip-noh-uh n]
adjective
  1. belonging or pertaining to the order Dipnoi, comprising the lungfishes.
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noun
  1. a dipnoan fish.
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Origin of dipnoan

1880–85; < New Latin Dipno(i) name of the order, plural of dipnous < Greek dípnoos double-breathing (di- di-1 + -pnoos, derivative of pnoḗ breathing, breath, air, derivative of pneîn to breathe) + -an
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for dipnoan

dipnoan

adjective
  1. of, relating to, or belonging to the Dipnoi, a subclass of bony fishes comprising the lungfishes
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noun
  1. any lungfish
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Word Origin

C19: from New Latin Dipnoi, from Greek dipnoos, double-breathing, from di- 1 + pnoē breathing, air, from pnein to breathe
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012