HA1c

noun

ˌāch-ˌā-ˌwən-ˈsē

: 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.—

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Word History

First Known Use

2002, in the meaning defined above

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The first known use of HA1c was in 2002

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ha'penny

HA1c

HAA

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Style

“HA1c.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/HA1c. Accessed 30 Jul. 2025.

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Medical Definition

HA1c

noun

ˌāch-ˌā-ˌwən-ˈsē

: hemoglobin a1c

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