acidity

• 名词，指酸的性质或状态，包括酸味、酸性物质的特性以及pH值低于7的程度。

A noun referring to the quality or state of being acidic, including the sour taste of acidic substances and a pH level lower than 7.

不可数

1. Property of being acidicB2formalscientific

   The chemical property of a substance that has a pH lower than 7, indicating a higher concentration of hydrogen ions.

   酸度

   • The acidity of lemon juice makes it a natural preservative.
   • Soil acidity can affect plant growth.
   • The chemist measured the acidity of the solution using a pH meter.

   反义词alkalinity

2. Sour taste sensationB1formal

   The sharp, sour flavor perceived when consuming acidic substances.

   酸味

   • The acidity of the wine gave it a crisp finish.
   • She enjoyed the pleasant acidity of the green apple.
   • The sauce had a balanced acidity that complemented the dish.

   同义词acidulousnesssharpnesssournesstartnessvinegariness

   反义词mildnesssweetness

3. pH values below 7B2formalscientific

   A measure of the concentration of hydrogen ions in a solution, with values less than 7 indicating an acidic nature.

   酸度

   • Acids have a pH value below 7, indicating high acidity.
   • The acidity of the lake increased due to acid rain.
   • A pH meter is used to determine the acidity of a liquid.

   反义词alkalinity