blastocyst
the blastula of the mammalian embryo, consisting of an inner cell mass, a cavity, and an outer layer, the trophoblast.
Compare Meanings
Click for a side-by-side comparison of meanings. Use the word comparison feature to learn the differences between similar and commonly confused words.
Origin of blastocyst
1Words Nearby blastocyst
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use blastocyst in a sentence
A research team based in Australia and Italy described animal experiments in which 1 in 4 vitrified cow eggs were fertilized and later grew, by around day 5, to the blastocyst stage.
Solving mysteries of reproduction helped make parenthood possible for millions | Robin Marantz Henig | June 9, 2021 | Science NewsBack in 2018, a team grew similar blastocysts from mouse stem cells—an admirable effort, but not a perfect model as mice and humans have different development trajectories.
Scientists Created an Artificial Early Embryo From Human Skin Cells | Shelly Fan | March 23, 2021 | Singularity HubScientists know that during a pregnancy, a fertilized egg develops into a blastocyst around day four, and it then implants around day eight.
Scientists Created an Artificial Early Embryo From Human Skin Cells | Shelly Fan | March 23, 2021 | Singularity HubThough they didn’t get beyond the blastocyst stage, both models are by far the most complete replicas of an early human embryo to date.
Scientists Created an Artificial Early Embryo From Human Skin Cells | Shelly Fan | March 23, 2021 | Singularity HubFor instance, last week, Zernicka-Goetz posted a preprint describing how her lab coaxed stem cells to self-assemble into a version of a human blastocyst, as a week-old embryo is known.
Scientists plan to drop the 14-day embryo rule, a key limit on stem cell research | Antonio Regalado | March 16, 2021 | MIT Technology Review
British Dictionary definitions for blastocyst
/ (ˈblæstəʊˌsɪst) /
Also called: blastosphere the blastula of mammals: a sphere of cells (trophoblast) enclosing an inner mass of cells and a fluid-filled cavity (blastocoel)
another name for germinal vesicle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for blastocyst
[ blăs′tə-sĭst′ ]
The modified blastula that is characteristic of placental mammals. It has an outer layer, known as a trophoblast, that participates in the development of the placenta. The inner layer of cells develops into the embryo.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Browse