placentation

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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
References in periodicals archive ?
They also identified the placenta of sloth them placenta endotheliochorial. The placenta according to them resembles each other in both families of sloth with the invasive chorium and it could be classified like this usually them placenta endotheliochorial (Gilmore et al., 1998).
they increase the importance of the acts of the development of the placenta, since these they classified it in the beginning of the gestation, the transition between the types syndesmochorial and endotheliochorial. However, the transitions between the types syndesmochorial and endotheliochorial affirmed by these authors cannot be compared with the dates obtained in our research, because we examined placentas to term.