Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of placenta is as below...

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..

Placentiferous :: Placentiferous (a.) Having or producing a placenta.

Implacental :: Implacental (a.) Without a placenta, as marsupials and monotremes..

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..

Aplacentata :: Aplacentata (n. pl.) Mammals which have no 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..

Placentation :: Placentation (n.) The mode in which the placenta is arranged or composed; as, axile placentation; parietal placentation..

Placentiform :: Placentiform (a.) Having the shape of a placenta, or circular thickened disk somewhat thinner about the middle..

Placental :: Placental (n.) One of the Placentalia.

Placentary :: Placentary (a.) Having reference to the placenta; as, the placentary system of classification..

Trophosperm :: Trophosperm (n.) The placenta.

Secundine :: Secundine (n.) The afterbirth, or placenta and membranes; -- generally used in the plural..

Implacentalia :: Implacentalia (n. pl.) A primary division of the Mammalia, including the monotremes and marsupials, in which no placenta is formed..

Zonaria :: Zonaria (n. pl.) A division of Mammalia in which the placenta is zonelike.

Polycotyledonary :: Polycotyledonary (a.) Having the villi of the placenta collected into definite patches, or cotyledons..

Cotyledonary :: Cotyledonary (a.) Having a cotyledon; tufted; as, the cotyledonary placenta of the cow..

Placentalia :: Placentalia (n. pl.) A division of Mammalia including those that have a placenta, or all the orders above the marsupials..

Placentation :: Placentation (n.) The mode of formation of the placenta in different animals; as, the placentation of mammals..

Monodelphia :: Monodelphia (n. pl.) The group that includes all ordinary or placental mammals; the Placentalia. See Mammalia.

Acetabulum :: Acetabulum (n.) One of the lobes of the placenta in ruminating animals.

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