erythroblastosis

noun

eryth·​ro·​blas·​to·​sis i-ˌrith-rə-ˌbla-ˈstō-səs How to pronounce erythroblastosis (audio)
plural erythroblastoses i-ˌrith-rə-ˌbla-ˈstō-ˌsēz How to pronounce erythroblastosis (audio)
: abnormal presence of erythroblasts in the circulating blood
especially : erythroblastosis fetalis

Word History

Etymology

New Latin

First Known Use

circa 1923, in the meaning defined above

Time Traveler
The first known use of erythroblastosis was circa 1923

Phrases Containing erythroblastosis

Rhymes for erythroblastosis

See All Rhymes for erythroblastosis

Browse Nearby Words

erythroblastic
erythroblastosis
erythroblastosis fetalis
See all Nearby Words

Cite this Entry

“Erythroblastosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/erythroblastosis. Accessed 8 Jul. 2026.

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Medical Definition

erythroblastosis

noun
eryth·​ro·​blas·​to·​sis -ˌblas-ˈtō-səs How to pronounce erythroblastosis (audio)
plural erythroblastoses -ˌsēz How to pronounce erythroblastosis (audio)
: abnormal presence of erythroblasts in the circulating blood
especially : erythroblastosis fetalis
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