: a large erythroblast that appears in the blood especially in pernicious anemia

Word History

First Known Use

1890, in the meaning defined above

Time Traveler
The first known use of megaloblast was in 1890

Browse Nearby Words

Cite this Entry

“Megaloblast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/megaloblast. Accessed 10 Mar. 2025.

Medical Definition

megaloblast

noun
: a large erythroblast that appears in the blood especially in pernicious anemia

More from Merriam-Webster on megaloblast

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!