| acidity | | |
| n. (attribute) | 1. acidity, sour, sourness | the property of being acidic. |
| ~ taste property | a property appreciated via the sense of taste. |
| ~ acerbity, tartness | a sharp sour taste. |
| ~ vinegariness, vinegarishness | a sourness resembling that of vinegar. |
| n. (cognition) | 2. acidity, acidulousness | the taste experience when something acidic is taken into the mouth. |
| ~ sourness, tartness, sour | the taste experience when vinegar or lemon juice is taken into the mouth. |
| n. (attribute) | 3. acidity | pH values below 7. |
| ~ ph, ph scale | (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic). |
| ~ hyperacidity | excessive acidity. |
| sourness | | |
| n. (cognition) | 1. sour, sourness, tartness | the taste experience when vinegar or lemon juice is taken into the mouth. |
| ~ gustatory perception, gustatory sensation, taste, taste perception, taste sensation | the sensation that results when taste buds in the tongue and throat convey information about the chemical composition of a soluble stimulus.; "the candy left him with a bad taste"; "the melon had a delicious taste" |
| ~ acidulousness, acidity | the taste experience when something acidic is taken into the mouth. |
| n. (attribute) | 2. moroseness, sourness, sulkiness, sullenness | a sullen moody resentful disposition. |
| ~ ill nature | a disagreeable, irritable, or malevolent disposition. |
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