Dictionary
plac•en•ta•tion
Pronunciation: (plas"un-tā'shun), [key]—
n.
1. Anat., Zool.
a. the formation of a placenta.
b. the manner of placement or construction of a placenta.
2. Bot.the disposition or arrangement of a placenta or placentas.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.