n.
Pronunciation: i- ' rith-r ə - ˌ blast
Function: noun
Etymology: International Scientific Vocabulary
Date: circa 1890
: a polychromatic nucleated cell of red bone marrow that synthesizes hemoglobin and that is an intermediate in the initial stage of red blood cell formation broadly : a cell ancestral to red blood cells
– eryth · ro · blas · tic \ - ˌ rith-r ə - ' blas-tik \ adjective