placenta
placenta
Definition
pla·centa (plə sen′tə)
noun pl. placentas -·tas or placentae -·tae (-tē)
- Anat., Zool.
- a vascular organ, developed within the uterus of most mammals during gestation from the chorion of the embryo and a part of the maternal uterine wall, that is connected to the embryo by the umbilical cord and that is discharged shortly after birth: it serves as the structure through which nourishment for the fetus is received from, and wastes of the fetus are eliminated into, the circulatory system of the mother
- any similar structure in other animals
- Bot.
- that part of the lining of the ovary which bears the ovules
- any mass of tissue that bears sporangia or spores
Etymology: ModL < L, lit., a cake < Gr plakounta, acc. of plakous, a flat cake < plax (gen. plakos), a flat object < IE base *plāk-, flat > L placere, to please
placenta
Usage Examples
Converse of object
- cross: Neonatal immunity In Humans, maternal IgG can cross the placenta.
- retain: Karen had a natural third stage with her second baby, Lewie, after having had a retained placenta with her first baby.
- deliver: I opted to deliver the placenta normally, which came out about an hour later.
- lie: Q. Can I labor with a low lying placenta?
- develop: Using ultrasound to guide the way, a needle is inserted through the mother's abdomen into the developing placenta.
- form: A needle is used to take a sample of the cells that will form the placenta.
Adjective modifier
- retained: Stages of labor Q. What causes a retained placenta?
- human: In the case of the human placenta, the evidence seems to be more equivocal.
- normal: Foals born at less than 300 days with a normal placenta are highly unlikely to survive.
- abrupted: An abrupted placenta meant I had my baby by emergency cesarean early -- at 35 weeks.
- low-lying: This may happen if you have a small or unusual shaped uterus, a fibroid or low-lying placenta.
Modifies a noun
- praevia: I have never heard of doing ultrasound at the end of pregnancy just to rule out placenta praevia.
- previa: Any women with placenta previa or with vaginal bleeding of an unknown cause should not participate in an exercise program.
- accreta: The rate of placenta accreta is much higher in women with a prior cesarean, than otherwise.
- abruption: She has been admitted to Flagler Hospital in St. Augustine, FL with possible placenta abruption.
Preposition: during
- pregnancy: CONCLUSIONS: This study provides evidence of an abnormality of growth factor expression in the placenta during pregnancies complicated by pre-eclampsia.
Noun used with modifier
- mouse: These data show that placental Igf2 regulates the development of the diffusional exchange characteristics of the mouse placenta.
Preposition: after
- birth: The usual separation of th e placenta after birth fails to occur and heavy bleeding may result.
Preposition: of
- woman: Its only found in the placenta of pregnant women.
Browse dictionary entries near placenta
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- placentae
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- placer
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- placid
- placidity
- placidly
