pronephros

[ proh-nef-ros, -ruhs ]

/ proʊˈnɛf rɒs, -rəs /

noun, plural pro·neph·roi [proh-nef-roi], /proʊˈnɛf rɔɪ/, pro·neph·ra [proh-nef-ruh]. /proʊˈnɛf rə/. Embryology.

one of the three embryonic excretory organs of vertebrates, which becomes the functional kidney of certain primitive fishes.

Compare mesonephros, metanephros.

Origin of pronephros

1875–80; <New Latin <Greek pro-pro-² + nephrós kidney

OTHER WORDS FROM pronephros

pro·neph·ric

[proh-nef-rik], /proʊˈnɛf rɪk/, adjective

Words nearby pronephros

pronatalism, pronate, pronation, pronator, prone, pronephros, prone pressure method, prong, pronged, pronghorn, prong key

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for pronephros

The pronephros is distinguished from the mesonephros by developmental as well as structural features.
The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour
For a long time the pronephros and its duct form the only excretory organs of larval Amphibia.
The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour
The knob forms the only structure which can be regarded as a rudiment of the pronephros.
The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour
The pronephros has only been observed in Birds, and is very possibly not developed in other Amniota.
The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour

The development of the mesonephros does not take place till long after that of the pronephros.
The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour

British Dictionary definitions for pronephros

pronephros

/ (prəʊˈnɛfrɒs) /

noun plural -roi (-rɔɪ) or -ra (-rə)

the first-formed anterior part of the embryonic kidney in vertebrates, which remains functional in the larvae of the lower vertebratesSee also mesonephros, metanephros

Derived forms of pronephros

pronephric, adjective

Word Origin for pronephros

C19: New Latin, from pro- ² + Greek nephros kidney

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

Medical definitions for pronephros

pronephros

[ prō-nĕf′rəs, -rŏs′ ]

n. pl. pro•neph•roi (-roi)

A kidneylike organ, being either part of the most anterior pair of three pairs of organs in a vertebrate embryo, usually disappearing early in embryonic development.

单词	pronephros
释义	pronephros [ proh-nef-ros, -ruhs ] / proʊˈnɛf rɒs, -rəs / noun, plural pro·neph·roi [proh-nef-roi], /proʊˈnɛf rɔɪ/, pro·neph·ra [proh-nef-ruh]. /proʊˈnɛf rə/. Embryology. one of the three embryonic excretory organs of vertebrates, which becomes the functional kidney of certain primitive fishes. Compare mesonephros, metanephros. Origin of pronephros 1875–80; <New Latin <Greek pro-pro-² + nephrós kidney OTHER WORDS FROM pronephros pro·neph·ric [proh-nef-rik], /proʊˈnɛf rɪk/, adjective Words nearby pronephros pronatalism, pronate, pronation, pronator, prone, pronephros, prone pressure method, prong, pronged, pronghorn, prong key Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for pronephros The pronephros is distinguished from the mesonephros by developmental as well as structural features. The Works of Francis Maitland Balfour, Volume III (of 4)\|Francis Maitland Balfour For a long time the pronephros and its duct form the only excretory organs of larval Amphibia. The Works of Francis Maitland Balfour, Volume III (of 4)\|Francis Maitland Balfour The knob forms the only structure which can be regarded as a rudiment of the pronephros. The Works of Francis Maitland Balfour, Volume III (of 4)\|Francis Maitland Balfour The pronephros has only been observed in Birds, and is very possibly not developed in other Amniota. The Works of Francis Maitland Balfour, Volume III (of 4)\|Francis Maitland Balfour The development of the mesonephros does not take place till long after that of the pronephros. The Works of Francis Maitland Balfour, Volume III (of 4)\|Francis Maitland Balfour British Dictionary definitions for pronephros pronephros / (prəʊˈnɛfrɒs) / noun plural -roi (-rɔɪ) or -ra (-rə) the first-formed anterior part of the embryonic kidney in vertebrates, which remains functional in the larvae of the lower vertebratesSee also mesonephros, metanephros Derived forms of pronephros pronephric, adjective Word Origin for pronephros C19: New Latin, from pro- ² + Greek nephros kidney 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 Medical definitions for pronephros pronephros [ prō-nĕf′rəs, -rŏs′ ] n. pl. pro•neph•roi (-roi) A kidneylike organ, being either part of the most anterior pair of three pairs of organs in a vertebrate embryo, usually disappearing early in embryonic development. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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