pronephros
one of the three embryonic excretory organs of vertebrates, which becomes the functional kidney of certain primitive fishes.
Origin of pronephros
1Other words from pronephros
- pro·neph·ric [proh-nef-rik], /proʊˈnɛf rɪk/, adjective
- Compare mesonephros, metanephros.
Words Nearby pronephros
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use pronephros in a sentence
The head and even the region of the pronephros are clearly separate from the yolk-sac; the mouth is coming to be formed.
A Guide to the Study of Fishes, Volume 1 (of 2) | David Starr JordanThe great distinction of the pronephros is that it, and it alone, forms the segmental duct.
The Origin of Vertebrates | Walter Holbrook GaskellIt is clear from the above description that there is no trace of head-kidney or pronephros visible in the adult.
The Works of Francis Maitland Balfour, Volume 1 | Francis Maitland BalfourThe pronephros is placed, as can be made out in later stages, on the level of the opening of the air-bladder into the throat.
The Works of Francis Maitland Balfour, Volume 1 | Francis Maitland BalfourIt may be noted that in Lepidosteus the whole pronephros has exactly the character of a single segmental tube of the mesonephros.
The Works of Francis Maitland Balfour, Volume 1 | Francis Maitland Balfour
British Dictionary definitions for pronephros
/ (prəʊˈnɛfrɒs) /
the first-formed anterior part of the embryonic kidney in vertebrates, which remains functional in the larvae of the lower vertebrates: See also mesonephros, metanephros
Origin of pronephros
1Derived forms of pronephros
- pronephric, adjective
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
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