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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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n. - (embryology) the organic process whereby a fertilized egg becomes implanted in the lining of the uterus of placental mammals.

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Usage examples (3)
  • For some it dates from the first instant; for others it could not at least precede nidation implantation in the uterus.
  • Pregnancies are medically recognized conceptions, often defined as beginning at implantation or nidation roughly a week after fertilization.
  • Adverse effects on nidation in rats, embryo viability in mice, and metabolism in vitro of rat testis and human spermatozoa have been attributed to Lithium, as have...
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We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.