phlevel
nounUK /ˌpiːˈeɪtʃ ˌlevəl/
US /ˌpiːˈeɪtʃ ˌlevəl/
A number that tells how sour or how soapy something is.
The pH level of lemon juice is low because it is very sour.
RELATED WORDS
OTHER MEANINGS
2. A measure used in science to compare how acidic or basic a liquid is on a scale from 0 to 14.
Scientists tested the pH level of the lake water to check it was safe for fish.
3. A number that shows whether a swimming pool needs more or less chemicals.
Dad checked the pH level of the pool before we jumped in.
4. A way to describe how strong a sour taste or soapy feel is in a liquid.
The pH level of soap is high, which is why it feels slippery.