Dictionary   FastHealth  Email This!

  ,


al·lan·to·is

npl  al*lan*to*ides   :  a vascular fetal membrane of reptiles, birds, or mammals that is formed as a pouch from the hindgut and that in placental mammals is intimately associated with the chorion in formation of the placenta .
 
 

 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.







               



               



St. Mary's Clearwater Valley Hospital and Clinics (Cottonwood, Idaho - Idaho County)