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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..

Parietal :: Parietal (a.) Attached to the main wall of the ovary, and not to the axis; -- said of a placenta..

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

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

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

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

Sporophore :: Sporophore (n.) A 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..

Placenta :: Placenta (n.) The part of a pistil or fruit to which the ovules or seeds are attached.

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

Implacental :: Implacental (n.) A mammal having no placenta.

Placentae :: Placentae (pl. ) of Placent.

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

Decidua :: Decidua (n.) The inner layer of the wall of the uterus, which envelops the embryo, forms a part of the placenta, and is discharged with it..

Cotyledon :: Cotyledon (n.) One of the patches of villi found in some forms of placenta.

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

Funicle :: Funicle (n.) The little stalk that attaches a seed to the placenta.

Placental :: Placental (a.) Of or pertaining to the placenta; having, or characterized by having, a placenta; as, a placental mammal..

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

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

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