'anerythroplastic' originates from Greek, specifically the prefix 'an-' meaning 'without', 'erythro-' meaning 'red', and 'plastic' meaning 'forming' or 'molding'.

'anerythroplastic' was formed in modern medical English by combining Greek roots to describe the absence of red blood cell formation.

Initially, it meant 'without red blood cell formation', and this meaning has remained the same in modern medical usage.