[ ih-rith-roh-bla-stoh-sis ]
/ ɪˌrɪθ roʊ blæˈstoʊ sɪs /

noun Pathology.

the presence of erythroblasts in the blood.
Also called eryth·roblasto·sis fe·tal·is [fi-tal-is] /fɪˈtæl ɪs/, erythroblasto·sis ne·o·na·to·rum [nee-uh-nuh-tawr-uh m, -tohr-] /ˌni ə nəˈtɔr əm, -ˈtoʊr-/. this condition in the fetus or newborn, usually caused by an Rh incompatibility between mother and baby.

Origin of erythroblastosis

First recorded in 1930–35; erythroblast + -osis

Related forms

e·ryth·ro·blas·tot·ic [ih-rith-roh-bla-stot-ik] /ɪˌrɪθ roʊ blæˈstɒt ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for erythroblastosis


/ (ɪˌrɪθrəʊblæˈstəʊsɪs) /


the abnormal presence of erythroblasts in the circulating blood
Also called: erythroblastosis fetalis an anaemic blood disease of a fetus or newborn child, characterized by erythroblasts in the circulating blood: caused by a blood incompatibility between mother and fetus
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

Medicine definitions for erythroblastosis


[ ĭ-rĭth′rō-blă-stōsĭs ]

n. pl. e•ryth•ro•blas•to•ses (-sēz)

The abnormal presence of erythroblasts in the blood.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.