noun Cell Biology.
an immature leukocyte.
Origin of leukoblast
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
An immature white blood cell formed during the transition from lymphoidocyte to promyelocyte.proleukocyte
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.