Look up: pronephros

1. pronephros
   the primordial kidney; an excretory structure or its rudiments developing in the embryo before the mesonephros Category: Medicine
   Found on http://www.mijnwoordenboek.nl/definition
   
   
2. Pronephros
   Pro·neph'ros Pro*neph'ron noun [ New Latin , from Greek ... before + ... a kidney.] (Anat.) The head kidney. See under Head .
   Found on http://www.encyclo.co.uk/webster/P/173
   
   
3. pronephros
   1. The definitive excretory organ of primitive fishes. ... Synonym: head kidney. ... 2. In the embryos of higher vertebrates, a vestigial structure consisting of a series of tortuous tubules emptying into the cloaca by way of the primary nephric duct; in the human embryo, the pronephros is a very ru...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
4. pronephros
   (pro-nef´ros) pl. proneph´roi a vestigial excretory structure developing in the embryo before the mesonephros; its duct is later used by the mesonephros, which arises caudal to it. the definitive excretory organ of primitive fishes.
   Found on http://www.encyclo.co.uk/local/21001
   
   
5. Pronephros
   • (n.) Alt. of Pronephron
   Found on http://thinkexist.com/dictionary/meaning
   
   
6. pronephros
   most primitive of the three vertebrate kidneys, active in the adults of some primitive fish (lampreys and hagfish), the embryos of more advanced ... [5 related articles]
   Found on http://www.britannica.com/eb/a-z/p/120
   
   
7. pronephros
   Type: Term Pronunciation: prō-nef′ros, -roy Definitions: 1. The definitive excretory organ of primitive fishes. 2. In the embryos of higher vertebrates, a vestigial structure consisting of a series of tortuous tubules emptying into the cloaca by way of the primary nephric duct; in the hum...
   Found on http://www.medilexicon.com/medicaldictio
   
   
8. Pronephros
   `Pronephros` the most basic of the three excretory organs that develop in vertebrates, corresponding to the first stage of kidney development. It is succeeded by the mesonephros, which in fish and amphibians remains as the adult kidney. In amniotes the mesonephros is the embryonic kidney and a more ...
   Found on http://en.wikipedia.org/wiki/Pronephros