pHnoun [ C usually singular ]
uk/ˌpiːˈeɪtʃ/us/ˌpiːˈeɪtʃ/a number that shows how strongly acid or alkaline a substance is, in a range from 0 to 14:
Below pH 6.5 is acid, above pH 7.5 is alkaline.
The soil in our garden has a low/high pH.
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Miscellaneous units of measurement
- acre
- becquerel
- caloric
- calorific
- curie
- farad
- flashpoint
- Gy
- hectare
- horsepower
- kHz
- kilohertz
- kilojoule
- lumen
- millibar
- molal
- molar
- newton
- SI unit
- watt
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You can also find related words, phrases, and synonyms in the topics:
Chemistry - general words