Definition of implantation in English:


Line breaks: im|plant|ation
Pronunciation: /ɪmplɑːnˈteɪʃn


[mass noun]
  • 1The action of implanting or state of being implanted: the implantation of alien or artificial hearts [count noun]: hormone implantations
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    • Whether these alien chip implantations are part of another government project or are actually implanted by aliens is a whole discussion in itself.
    • Worldwide there have so far been only some 50 implantations for OCD and 15 for depression, but the technology suggests a not-too-distant future when options other than drugs may be available to sufferers of serious mental illness.
    • He suggested that I have knee implantations, but I'm not sure if I want to go that route.
  • 1.1 Zoology & Medicine (In a mammal) the attachment of the fertilized egg or blastocyst to the wall of the womb at the start of pregnancy. Also called nidation.
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    • Gestation lasts two months, but the young may be born up to a year after mating because these otters employ delayed implantation of the fertilized egg in the uterus.
    • The term referred to the embryo before its implantation in the womb.
    • If fertilization occurs, progesterone supports implantation of the ovum and maintains the pregnancy.


late 16th century: from French, from implanter 'to implant'.

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