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-blast

  1. a combining form meaning “bud, sprout,” “embryo,” “formative cells or cell layer,” used in the formation of compound words: ectoblast.
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Origin of -blast

< Greek, combining form of blastós a bud, sprout
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for -blast

-blast

n combining form
  1. (in biology) indicating an embryonic cell or formative layermesoblast
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Word Origin

from Greek blastos bud
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

-blast in Medicine

-blast

suff.
  1. An immature, embryonic stage in the development of cells or tissues:erythroblast.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.