placentation

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:

1. (a) apical, at the ovary apex,
2. (b) basal, at the ovary base,
3. (c) parietal, on the ovary wall,
4. (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