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Bud; germ; budding; germination: blastocyst.
[From Greek blastos, bud, germ, of unknown origin.]
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.
(in biology) indicating an embryo or bud or the process of budding: blastoderm.
[from Greek blastos; see -blast]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a combining form meaning “bud, sprout,” “embryo,” “formative cells or cell layer”: blastoderm. Compare -blast.
[< Greek, comb. form of blastós a bud, sprout]
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