- the quality or state of being acid
- the amount of acid present in a solution, often expressed in terms of pH
- another name for hyperacidity
WordReference Random House Unabridged Dictionary of American English © 2026
a•cid•i•ty
(ə sid′i tē),USA pronunciation n.
- Chemistrythe quality or state of being acid.
- sourness;
tartness. - excessive acid quality, as of the gastric juice.
- Late Latin aciditās. See acid, -ity
- 1610–20
Collins Concise English Dictionary © HarperCollins Publishers::
acidity /əˈsɪdɪtɪ/ n ( pl -ties)
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'acidity' also found in these entries (note: many are not synonyms or translations):
acidosis
- antacid
- buffer
- hyperacidity
- pH
- sour
- acid number
- acidogenic
- anacidity
- chlorophenol red
- correct
- deacidify
- hyperoxemia
- hypoacidity
- litmus test
- vinegarish
- sweet
