acidity
noun
acid·i·ty
ə-ˈsi-də-tē 
a-
plural acidities
1
: the quality, state, or degree of being acid
2
: the state of being excessively acid
Examples of acidity in a Sentence
detected a certain acidity in the way he responded
the acidity of their relationship was well known to their mutual acquaintances
Recent Examples on the Web
Another thing to note is that vinegar’s acidity can sometimes damage certain finishes on wood cabinets.
—
Daley Quinn, Southern Living, 11 Jan. 2026
The acidity of the juice will hinder the activity of polyphenol oxidase, which pumps the brakes on browning.
—Kirsten Nunez, Martha Stewart, 10 Jan. 2026
Some bartenders try to honor the original three-ingredient recipe and pile on the grapefruit juice, making a whiskey greyhound with too much sweetness, while others either reduce the fruit component to almost nothing or else add acidity with lemons or powdered citric acid.
—Jeremy Repanich, Robb Report, 10 Jan. 2026
Drought shrivels the grapes; excessive heat deprives the juice of acidity; too much rain results in rampant mold.
—Nicola Twilley, New Yorker, 5 Jan. 2026
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Cite this Entry
“Acidity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acidity. Accessed 13 Jan. 2026.
Kids Definition
acidity
noun
acid·i·ty
ə-ˈsid-ət-ē
a-
plural acidities
1
: the quality, state, or degree of being acid
2
: the state of being extremely acid
Medical Definition
acidity
noun
acid·i·ty
ə-ˈsid-ət-ē, a-
plural acidities
1
: the quality, state, or degree of being sour or chemically acid
the acidity of lemon juice
2
: the quality or state of being excessively or abnormally acid : hyperacidity
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