Definition of placenta

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Placenta (n.) The vascular appendage which connects the fetus with the parent, and is cast off in parturition with the afterbirth..

Lern More About Placenta

Acetabulum :: Acetabulum (n.) One of the lobes of the placenta in ruminating animals.
Placentation :: Placentation (n.) The mode in which the placenta is arranged or composed; as, axile placentation; parietal placentation..
Cotyledonary :: Cotyledonary (a.) Having a cotyledon; tufted; as, the cotyledonary placenta of the cow..
Placenta :: Placenta (n.) The part of a pistil or fruit to which the ovules or seeds are attached.
Metadiscoidal :: Metadiscoidal (a.) Discoidal by derivation; -- applied especially to the placenta of man and apes, because it is supposed to have been derived from a diffused placenta..
Placentary :: Placentary (a.) Having reference to the placenta; as, the placentary system of classification..
Placentiform :: Placentiform (a.) Having the shape of a placenta, or circular thickened disk somewhat thinner about the middle..
Placentiferous :: Placentiferous (a.) Having or producing a placenta.
Cotyledon :: Cotyledon (n.) One of the patches of villi found in some forms of placenta.
Marsupialia :: Marsupialia (n. pl.) A subclass of Mammalia, including nearly all the mammals of Australia and the adjacent islands, together with the opossums of America. They differ from ordinary mammals in having the corpus callosum very small, in being implacental, and in having their young born while very immature. The female generally carries the young for some time after birth in an external pouch, or marsupium. Called also Marsupiata..
Placentas :: Placentas (pl. ) of Placent.
Afterbirth :: Afterbirth (n.) The placenta and membranes with which the fetus is connected, and which come away after delivery..
Placentation :: Placentation (n.) The mode of formation of the placenta in different animals; as, the placentation of mammals..
Implacental :: Implacental (a.) Without a placenta, as marsupials and monotremes..
Spermaphore :: Spermaphore (n.) That part of the ovary from which the ovules arise; the placenta.
Trophosperm :: Trophosperm (n.) The placenta.
Lissencephala :: Lissencephala (n. pl.) A general name for all those placental mammals that have a brain with few or no cerebral convolutions, as Rodentia, Insectivora, etc..
Sporophore :: Sporophore (n.) A placenta.
Polycotyledonary :: Polycotyledonary (a.) Having the villi of the placenta collected into definite patches, or cotyledons..
Aplacental :: Aplacental (a.) Belonging to the Aplacentata; without placenta.
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