Late 19th century; earliest use found in The New Sydenham Society's Lexicon of Medicine and the Allied Sciences. From German Microblast from micro-, mikro- + -blast.
Definition of microblast in US English:
microblast
noun
An abnormally small erythroblast.
Origin
Late 19th century; earliest use found in The New Sydenham Society's Lexicon of Medicine and the Allied Sciences. From German Microblast from micro-, mikro- + -blast.