[plas-uh n-tey-shuh n]
Origin of placentation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for placentation
In double flowers of Primulaceæ similar alterations in the placentation may often be observed.
The placentation is constantly axile in the inferior row and parietal in the upper one.
To Santalaceæ they approach in processes, valvate corolla, and placentation, also to Loranthaceæ.
- botany the way in which ovules are attached in the ovary
- the way in which the placenta is attached in the uterus
- the process of formation of the placenta
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- Formation of a placenta in the uterus.
- The type or structure of a placenta.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.