im·plan·ta·tion | \ˌim-ˌplan-ˈtā-shən \

Definition of implantation 

1a : the act or process of implanting something

b : the state resulting from being implanted

2 in placental mammals : the process of attachment of the early embryo to the maternal uterine wall

Examples of implantation in a Sentence

Recent Examples on the Web

And though embryos with more than half abnormal cells had lower implantation and birth rates, the pregnancies still resulted in healthy births, suggesting the abnormal cells were either eliminated or repaired. Sumathi Reddy, WSJ, "IVF Testing Spurs a Debate Over ‘Mosaic’ Embryos," 21 Mar. 2018 These nonhormonal early versions probably worked by interfering with ovulation, fertilization, or implantation by causing mild inflammation of the endometrium. Carolyn Todd, Allure, "The History and Evolution of Birth Control in America," 12 July 2018 Two hybrid embryos have been frozen for future implantation, the researchers said. Ben Guarino, Washington Post, "‘Beautiful’ embryos created from near-extinct rhinoceros sperm," 4 July 2018 And total joint replacements may be infected during implantation, sometimes don’t function well and may cause pain. Bradley J. Fikes,, "Seeking financial security, Scripps Research is taking its science directly to patients," 24 June 2018 Nargund has since contributed to research showing that less hormonal stimulation produces better-quality eggs, though fewer, with a lower risk of chromosomal abnormality and a higher likelihood of implantation. Anna Louie Sussman,, "Falling Birthrates Call for More Accessible Fertility Treatment," 18 June 2018 This week, the agency revealed that five more deaths had been reported since last year’s warning, several of which were linked to perforations of the stomach wall after balloon implantation. Amanda Macmillan,, "12 People Have Died After Trying This Popular Weight-Loss Procedure. Here's What You Should Know," 7 June 2018 That plus the later implantation of North American species all but wiped out European crayfish species, according to Arne Jernelöv, a Swedish expert on invasive species. William Boston, WSJ, "Berlin Puts Out a Contract on Invasive Crawfish," 8 May 2018 Because progesterone is so important for the implantation and development of a fertilized egg, one line of thinking suggests that not having enough progesterone early in a pregnancy may lead to a miscarriage. Korin Miller, SELF, "Here's Why Khloe Kardashian Used Hormone Suppositories at the Beginning of Her Pregnancy," 28 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'implantation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of implantation

1578, in the meaning defined at sense 1a

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Time Traveler for implantation

The first known use of implantation was in 1578

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More Definitions for implantation


im·plan·ta·tion | \ˌim-ˌplan-ˈtā-shən \

Medical Definition of implantation 

: the act or process of implanting or the state of being implanted: as

a : the placement of a natural or artificial tooth in an artificially prepared socket in the jawbone

b in placental mammals : the process of attachment of the embryo to the maternal uterine wall

called also nidation

c : medical treatment by the insertion of an implant

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Comments on implantation

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a state of commotion or excitement

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