About The Word Placenta
Learn about the word Placenta to help solve your crossword puzzle. Discover Placenta definitions and meaning, origins, synonyms, related terms and more at the free Crossword Dictionary.
Placenta
| Placenta Definition And Meaning |
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What's The Definition Of Placenta?
[n] the vascular structure in the uterus of most mammals providing oxygen and nutrients for and transferring wastes from the developing fetus
[n] that part of the ovary of a flowering plant where the ovules form Synonyms | Synonyms for Placenta: Related Terms | Find terms related to Placenta: See Also | afterbirth | caul | embryonic membrane | ovary | reproductive structure | uterus | vascular structure | veil | womb Placenta In Webster's Dictionary \Pla*cen"ta\, n.; pl. L. {Placent[ae]}, E. {Placentas}.
[L., a cake, Gr. ? a flat cake, from ? flat, fr. ?, ?,
anything flat and broad.]
1. (Anat.) The vascular appendage which connects the fetus
with the parent, and is cast off in parturition with the
afterbirth.
Note: In most mammals the placenta is principally developed
from the allantois and chorion, and tufts of vascular
villi on its surface penetrate the blood vessels of the
parental uterus, and thus establish a nutritive and
excretory connection between the blood of the fetus and
that of the parent, though the blood itself does not
flow from one to the other.
2. (Bot.) The part of a pistil or fruit to which the ovules
or seeds are attached.
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