How to say "acidity" in Japanese

• 酸性さんせいJLPT N2approx.Common
  nounAcidity in the chemical or scientific sense: the property of being acidic, as opposed to alkaline. It does not describe flavor; for the sour taste of food or drink, 酸味 is the word.
• 酸味さんみCommon
  no-adjectiveSourness: the sour, tart taste of food and drink. When English 'acidity' refers to flavor rather than to chemistry, this is the word you want.

Use 酸性 for acidity as a chemical property, the scientific opposite of alkalinity; use 酸味 when acidity means sour taste in food or drink, the flavor sense of the English word.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 酸性さんせいacidity
• 酸味さんみsourness
• 酸度さんどacidity
• すっぱみsourness (in taste)
• 酸性度さんせいど(degree of) acidity