placental

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“
p primitive mouth, e ectoderm, i entoderm, d yelk remains in the primitive gut-cavity (u The cenogenetic gastrulation of the placental has been greatly modified by secondary adaptation in the various groups of this most advanced and youngest sub-class of the mammals.

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Definitions (10)

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  1. Of or pertaining to the placenta.
  2. Forming or constituted by a placenta: as, placental gestation; a placental part of the chorion.
  3. Provided with a placenta; placentate or placentary: as, a placental mammal.
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Examples (50)

  • (The Mammal Hall splits off into placental, marsupial, and monotreme mammal rooms, for example.) —  Omni: January 1995
  • "It is now accepted that placental-site trophoblastic tumors differ from other trophoblastic neoplasms in that the tumor load is not accurately correlated with the concentration of hCG, and that the tumor might be less sensitive to chemotherapy that is effective in the other types of trophoblastic neoplasia," he wrote. —  MedPageToday.com - medical news plus CME for physicians
  • The multiplicity or loss of the vitellogenin (vtg) gene family in vertebrates has been argued to have broad implications for the mode of reproduction (placental or non-placental), cleavage pattern (meroblastic or holoblastic) and character of the egg (pelagic or benthic). —  BioMed Central - Latest articles
  • (100 MYA), but after the marsupial-placental split (150 MYA). —  PLoS ONE Alerts: New Articles
  • Triangles and rectangles represent gene clusters and lost genes, respectively; dashed and dotted lines represent the marsupial-placental and intra-Boreoeutheria divergences, respectively. —  PLoS ONE Alerts: New Articles
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Etymologies (1)

Toggle Century etymologies Century Dictionary (1)

  1. from New Latin placentalis, from placenta, placenta: see placenta.
 

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