placentation
[plas″en-ta´shun] the series of events following implantation of the embryo and leading to development of the placenta.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
plac·en·ta·tion
(plas'en-tā'shŭn), The structural organization and mode of attachment of fetal to maternal tissues in the formation of the placenta. Types of placentation are defined under placenta.
Farlex Partner Medical Dictionary © Farlex 2012
placentation
(plăs′ən-tā′shən)n.a. Formation of a placenta in the uterus.
b. The type or structure of a placenta.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
placentation
Obstetrics The formation of the placenta in the uterus; the process by which a placenta grows and develops in the uterus. See Extrachorial placentation. McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
plac·en·ta·tion
(plas'en-tā'shŭn) The structural organization and mode of attachment of fetal to maternal tissues in the formation of the placenta.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
placentation
the arrangement of PLACENTAS (2) in the plant ovary, which can be classified into several categories including: - (a) apical, at the ovary apex,
- (b) basal, at the ovary base,
- (c) parietal, on the ovary wall,
- (d) free-central, on a column growing up from the ovary base.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005