noun Biology.

the nutritive yolk of a meroblastic ovum or egg.

Origin of parablast

First recorded in 1855–60; para-1 + -blast
Related formspar·a·blas·tic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for parablast



the yolk of an egg, such as a hen's egg, that undergoes meroblastic cleavage
Derived Formsparablastic, adjective

Word Origin for parablast

C19: from para- 1 + -blast
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

parablast in Medicine




The nutritive yolk of a meroblastic egg.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.