noun Cell Biology.
a large, metabolically active lymphocyte shortly before it enters into mitosis.
Origin of lymphoblast
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
an abnormal cell consisting of a large nucleus and small cytoplasm that was once thought to be an immature lymphocyte and is now associated with a type of leukaemia (lymphoblastic leukaemia)
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
An immature cell that gives rise to a lymphocyte.lymphocytoblast
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.