Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to blastomere: morula, blastomere biopsy


Any of the cells resulting from the cleavage of a fertilized ovum during early embryonic development.

blas′to·mer′ic (-mîr′ĭk, -mĕr′-) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Physiology) embryol any of the cells formed by cleavage of a fertilized egg
blastomeric adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈblæs təˌmɪər)

any cell produced during cleavage.
blas`to•mer′ic (-ˈmɛr ɪk, -ˈmɪər-) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.blastomere - any cell resulting from cleavage of a fertilized eggblastomere - any cell resulting from cleavage of a fertilized egg
cell - (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The morphology of each embryo was recorded and assessed daily based on cell count, percentage of fragmentation, and blastomere size.
The degree of achieved blastocyst expansion is dependent on TE functionality, including the success of adjuvant blastomere compaction, and tight-junction formation, and the capacity of various cellular mechanisms to pump water and other ions in and out of the cell.[34] It is possible that the degree of blastocyst expansion does not predict the pregnancy outcome because at the analyzed stage of development, this parameter does not yet affect embryonic development.
Perfecting this assisted reproduction technique may provide possibilities to obtain embryos of a determined sex selectively by means of blastomere sexing.
To satisfy the ethical issue, researchers demonstrated an alternate approach to isolate hESCs from a single blastomere without killing or destroying the human embryo.
Biggers, "National collection of embryo morphology data into Society for Assisted Reproductive Technology Clinic Outcomes Reporting System: associations among day 3 cell number, fragmentation and blastomere asymmetry, and live birth rate," Fertility and Sterility, vol.
The blastomere that absorbed the PL became the large blastomere (Fig.
In addition, this technology requires nuclei fixation which comes with at least two negative consequences: if isolated blastomere does not contain a nucleus or it is damaged during fixation, the lack of genetic material disables analysis, or if there are cytoplasmic residues after fixation, fluorescent signal evaluation will be inappropriate [14].
(iii) Growth can occur from the rest of totipotent stem cells displaced from the blastomere [2].
Here, we examined SRY, DYS14, AMELX, AMELY, TTC3, and RPL17 using WGAs from a single blastomere (Day 3) or trophoblastic (Day 5) biopsies, to determine the two important trisomies and the sex of the embryos from patients undergoing IVF treatments.
Spindle [5] and ooplasmic transfer [6,7] pre-fertilisation, and pronuclear [8] and blastomere nucleus transfer [9] post-fertilisation, have been explored to achieve this.
Cleavage biopsy for a single blastomere is the most popular approach for PGD indications.