Pronephroi

pro·neph·ros

[proh-nef-ros, -ruhs]
noun, plural pro·neph·roi [-roi] , pro·neph·ra [-ruh] . Embryology.
one of the three embryonic excretory organs of vertebrates, which becomes the functional kidney of certain primitive fishes.


Origin:
1875–80; < Neo-Latin < Greek pro- pro-2 + nephrós kidney

pro·neph·ric [proh-nef-rik] , adjective
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Pronephroi is always a great word to know.
So is flibbertigibbet. Does it mean:
a chattering or flighty, light-headed person.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
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World English Dictionary
pronephros (prəʊˈnɛfrɒs) [Click for IPA pronunciation guide]
 
n , pl -roi, -ra
mesonephros See also metanephros the first-formed anterior part of the embryonic kidney in vertebrates, which remains functional in the larvae of the lower vertebrates
 
[C19: New Latin, from pro-² + Greek nephros kidney]
 
pro'nephric
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

pronephros pro·neph·ros (prō-něf'rəs, -rŏs')
n. pl. pro·neph·roi (-roi) or pro·neph·ra (-rə)
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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