: hemoglobin a1c
The HA1c test gauges average blood sugar levels over a period of 2-3 months by measuring how much glucose is attached to red blood cells.Food & Fitness Advisor

Word History

First Known Use

2002, in the meaning defined above

Time Traveler
The first known use of HA1c was in 2002

Dictionary Entries Near HA1c

Cite this Entry

“HA1c.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/HA1c. Accessed 26 Sep. 2023.

Medical Definition

Love words? Need even more definitions?

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