blastocyst
noun
blas·to·cyst
ˈbla-stə-ˌsist 
: the modified blastula of a placental mammal having an outer layer composed of the trophoblast
Examples of blastocyst in a Sentence
Recent Examples on the Web
His team showed that mouse stem cells can self-organize into structures that resemble a blastocyst, which forms five or six days after sperm fertilizes an egg.
—
Jennifer Ouellette, Ars Technica, 7 Apr. 2023
About five to six days after fertilization, an early-stage embryo, called a blastocyst, forms.
—Brian Barrett, WIRED, 27 Feb. 2024
Of those seven, only 25% to 50% will grow in the laboratory long enough to be considered a more mature embryo called a blastocyst, Feinberg said.
—Madeline Holcombe, CNN, 21 Feb. 2024
Finally—about five to six days after fertilization—the blastocyst implants itself into the uterus.
—wendy Wisner, Parents, 18 Nov. 2023
Su and her colleagues were able to characterize the RNA into five distinct genetic profiles or time periods of embryonic development: the oocyte or egg, zygote or fertilized egg, cleavage, morula and blastocyst stages.
—Deborah Balthazar, STAT, 17 Jan. 2024
Under a microscope, the structures looked similar to blastocysts—the early stage of an embryo—at days 8 and 9 of development.
—Jennifer Ouellette, Ars Technica, 7 Apr. 2023
But to keep growing, a blastocyst had to embed itself into the lining of a mother’s uterus.
—Amos Zeeberg (discover Web Editor), Discover Magazine, 15 July 2010
During this stage, more cell division takes place, and your blastocyst takes a ball-like shape.
—wendy Wisner, Parents, 18 Nov. 2023
Jennifer Ouellette, Ars Technica, 7 Apr. 2023
About five to six days after fertilization, an early-stage embryo, called a blastocyst, forms.
—Brian Barrett, WIRED, 27 Feb. 2024
Of those seven, only 25% to 50% will grow in the laboratory long enough to be considered a more mature embryo called a blastocyst, Feinberg said.
—Madeline Holcombe, CNN, 21 Feb. 2024
Finally—about five to six days after fertilization—the blastocyst implants itself into the uterus.
—wendy Wisner, Parents, 18 Nov. 2023
Su and her colleagues were able to characterize the RNA into five distinct genetic profiles or time periods of embryonic development: the oocyte or egg, zygote or fertilized egg, cleavage, morula and blastocyst stages.
—Deborah Balthazar, STAT, 17 Jan. 2024
Under a microscope, the structures looked similar to blastocysts—the early stage of an embryo—at days 8 and 9 of development.
—Jennifer Ouellette, Ars Technica, 7 Apr. 2023
But to keep growing, a blastocyst had to embed itself into the lining of a mother’s uterus.
—Amos Zeeberg (discover Web Editor), Discover Magazine, 15 July 2010
During this stage, more cell division takes place, and your blastocyst takes a ball-like shape.
—wendy Wisner, Parents, 18 Nov. 2023
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'blastocyst.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Blastocyst.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blastocyst. Accessed 24 Apr. 2024.
Copy CitationMedical Definition
blastocyst
noun
blas·to·cyst
ˈblas-tə-ˌsist
: the modified blastula of a placental mammal
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