placenta meaning

EN[pləˈsentə] [-ɛntə]
  • The placenta (also known as afterbirth) is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply,
  • The word placenta comes from the Latin word for cake, from Greek πλακόεντα/πλακοῦντα plakóenta/plakoúnta, accusative of πλακόεις/πλακούς plakóeis/plakoús, "flat, slab-like", in reference to its round, flat appearance in humans.
  • Prototherial (egg-laying) and metatherial (marsupial) mammals produce a choriovitelline placenta that, while connected to the uterine wall, provides nutrients mainly derived from the egg sac.

    Definition of placenta in English Dictionary

  • NounPLplacentaePLplacentas
    1. (anatomy) A vascular organ in mammals, except monotremes and marsupials, present only in the female during gestation. It supplies food and oxygen from the mother to the foetus, and passes back waste. It is implanted in the wall of the uterus and links to the foetus through the umbilical cord. It is expelled after birth.
      1. (botany) In flowering plants, the part of the ovary where ovules develop; in non-flowering plants where the spores develop.
      2. More Examples
        1. Used in the Middle of Sentence
          • Late in gestation DNMT1o-deficient placentas had greater spongiotrophoblast content and reduced labyrinth vascular surface area.
          • In primiparous (maiden) mares, the fetomaternal contact area of the placenta as well as the surface density of chorionic microcotyledons is smaller than in multiparous mares [22 ].
          • In infected placentas from patients with IUGR, significant increase in the number of large fibrinoids with avascular villi, edema, and inflammation were observed [7 ].
        2. Used in the Beginning of Sentence
          • Placenta samples were used only for histoculture, as described in the present article.
          • Placentas and endometrial tissue was collected at 52–55 days of pregnancy by surgical embryectomy which involved removal of the entire conceptus and surrounding endometrial tissue.
        3. Used in the Ending of Sentence
          • At mid-pregnancy, feline CLs require extraovarian luteotropic signals which most likely come from the placenta.
      • Part-of-Speech Hierarchy
        1. Nouns
          • Nouns with irregular plurals
            • Countable nouns
          Related Links:
          1. en placental
          2. en placentas
          3. en placentae
          4. en placentals
          5. en placentary
          Source: Wiktionary
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          Meaning of placenta for the defined word.

          Grammatically, this word "placenta" is a noun, more specifically, a nouns with irregular plural and a countable noun.
          Difficultness: Level 6
          Easy     ➨     Difficult
          Definiteness: Level 8
          Definite    ➨     Versatile