Medical Definition of Implantation

Reviewed on 3/29/2021

Implantation: The act of setting in firmly.

In embryology, implantation refers specifically to the attachment of the fertilized egg to the uterine lining, which occurs approximately 6 or 7 days after conception (fertilization).

Many medical devices or materials may be implanted (embedded). There are breast implants, cochlear implants, defibrillator implants, pacemaker implants, etc.

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