n :  the inner cellular layer of the trophoblast of an embryonic placental mammal that gives rise to the plasmodial syncytiotrophoblast covering the placental villi - called also Langhans' layer , layer of Langhans  cy*to*tro*pho*blas*tic adj 
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2004.