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

Synonyms

• acerbity
• acidness
• acridity
• acridness
• acrimoniousness
• acrimony
• acuteness
• asperity
• bite
• bitterness
• edge
• harshness
• keenness
• poignance
• poignancy
• pungency
• roughness
• sharpness
• tartness

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

That's because the compounds that are found in red wine (the one's that are full of acidity and produce a dye-like substance) don't have as much time to set in. —Ashlyn Needham, Southern Living, 21 Dec. 2024

A lot of people think that fermentation happens as an effect of acidity and oxygen deprivation, but those nerds are wrong. —Fran Tirado, Them, 18 Dec. 2024

The flavors waned pleasantly after each bite, accompanied by delicate acidity. —Sam Stone, Bon Appétit, 16 Dec. 2024

Quality inspections scrutinize ideal acidity levels, peroxide values, and light-based analyses.8 These standards are set by the International Olive Council (IOC) and the European Commission. —Lauren O'Connor, Ms, Health, 16 Dec. 2024

Word History

Etymology

borrowed from French & Late Latin; French acidité, going back to Middle French, borrowed from Late Latin aciditāt-, aciditās, from Latin acidus "sour, acid entry 2" + -itāt-, -itās -ity

First Known Use

1615, in the meaning defined at sense 1

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