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

Snappy acidity and flavors of dark chocolate and raspberries. —Tom Mullen, Forbes, 8 Dec. 2024

The lemon juice added just the right amount of acidity to keep the soup feeling light. —Sarah Martens, Better Homes & Gardens, 4 Dec. 2024

According to a small study, the acidity of the lemon also stimulates the secretion of gastric juices—a digestive fluid in the stomach that can help break down food. —Anna Bader, Glamour, 3 Dec. 2024

Associate manager of audience strategy Carly Westerfield noticed a dash of citric acidity, which made for a nice counterpoint to the fruitiness. —Sam Stone, Bon Appétit, 2 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