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

The pH function specifically measures the acidity or alkalinity of your soil, which indicates how well your plants will absorb nutrients. —Alicia Geigel, Better Homes & Gardens, 9 Oct. 2024

Vinegar is often added to increase the acidity of the sauce and help preserve it, while salt enhances the overall flavor. —Katie Rosenhouse, Southern Living, 8 Oct. 2024

Proponents say that the diet can keep you healthy by controlling the acidity of your blood. —Kelly Burch Published, Verywell Health, 8 Oct. 2024

Full, balanced, with gripping tannins and sleek acidity. —Tom Mullen, Forbes, 6 Oct. 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