placentation

[ plas-uhn-tey-shuhn ]

/ ˌplæs ənˈteɪ ʃən /

noun

Anatomy, Zoology.

the formation of a placenta.
the manner of placement or construction of a placenta.

Botany. the disposition or arrangement of a placenta or placentas.

Origin of placentation

From French, dating back to 1750–60; see origin at placenta, -ation

Words nearby placentation

placenta membranacea, placenta previa, placenta reflexa, placenta spuria, placentate, placentation, Placentia, Placentia Bay, placentitis, placentography, placentoma

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for placentation

To Santalaceæ they approach in processes, valvate corolla, and placentation, also to Loranthaceæ.
Journals of Travels in Assam, Burma, Bhootan, Afghanistan and The|William Griffith
The placentation is constantly axile in the inferior row and parietal in the upper one.
Vegetable Teratology|Maxwell T. Masters
In double flowers of Primulaceæ similar alterations in the placentation may often be observed.
Vegetable Teratology|Maxwell T. Masters

British Dictionary definitions for placentation

placentation

/ (ˌplæsɛnˈteɪʃən) /

noun

botany the way in which ovules are attached in the ovary

zoology

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

Medical definitions for placentation

placentation

[ plăs′ən-tā′shən ]

n.

Formation of a placenta in the uterus.

The type or structure of a placenta.

单词	placentation
释义	placentation [ plas-uhn-tey-shuhn ] / ˌplæs ənˈteɪ ʃən / noun Anatomy, Zoology. the formation of a placenta. the manner of placement or construction of a placenta. Botany. the disposition or arrangement of a placenta or placentas. Origin of placentation From French, dating back to 1750–60; see origin at placenta, -ation Words nearby placentation placenta membranacea, placenta previa, placenta reflexa, placenta spuria, placentate, placentation, Placentia, Placentia Bay, placentitis, placentography, placentoma Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for placentation To Santalaceæ they approach in processes, valvate corolla, and placentation, also to Loranthaceæ. Journals of Travels in Assam, Burma, Bhootan, Afghanistan and The\|William Griffith The placentation is constantly axile in the inferior row and parietal in the upper one. Vegetable Teratology\|Maxwell T. Masters In double flowers of Primulaceæ similar alterations in the placentation may often be observed. Vegetable Teratology\|Maxwell T. Masters British Dictionary definitions for placentation placentation / (ˌplæsɛnˈteɪʃən) / noun botany the way in which ovules are attached in the ovary zoology 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 Medical definitions for placentation placentation [ plăs′ən-tā′shən ] n. 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.
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