pH
noun /ˌpiː ˈeɪtʃ/
/ˌpiː ˈeɪtʃ/
[singular] (chemistry)- a measurement of the level of acid or alkali in a solution or substance. In the pH range of 0 to 14 a reading of below 7 shows an acid and of above 7 shows an alkali.
- a pH of 7.5
- to test the pH level of the soil
WordfinderTopics Physics and chemistryc2- acid
- catalyst
- chemistry
- compound
- formula
- molecule
- pH
- react
- solution
- valency
Word Originearly 20th cent.: from p representing German Potenz ‘power’ + H, the symbol for hydrogen.