[Elamur Dictionary](https://md.dictionary.elamur.ai/free/en/) · [this page in HTML](https://dictionary.elamur.ai/free/en/english/ph/)

[dictionaries](https://md.dictionary.elamur.ai/free/en/) / [English](https://md.dictionary.elamur.ai/free/en/english/) / [P](https://md.dictionary.elamur.ai/free/en/english/p/) / ph

# ph

noun (pH); letters (ph)

«ph» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. pH is a number that shows how acidic or alkaline a liquid is, on a scale from 0 to 14. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/ph/#m1)
2. The letters «ph» together usually make an /f/ sound, as in phone and elephant. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/ph/#m2)

### In the lessons

In science, pH 7 is neutral (pure water), below 7 is acid (lemon juice), above 7 is alkali (soap). Litmus paper or universal indicator changes colour to show pH. In phonics, «ph» is one way to spell the /f/ sound, mostly in words from Greek.

### Examples

- Lemon juice has a low pH because it is acidic. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/ph/#x1)
- Pure water has a pH of 7. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/ph/#x2)
- The indicator turned purple, so the pH was high. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/ph/#x3)
- «Ph» in «photo» sounds like f. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/ph/#x4)
- We tested the pH of the pond water. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/ph/#x5)
- Soap has a pH above 7. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/ph/#x6)

### Note

Write it pH (small p, capital H). A LOWER pH number means MORE acidic. Each step is ten times stronger: pH 3 is ten times more acidic than pH 4.

## On Mova

- [Trees and pragmatics of «ph» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/ph/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«ph» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/ph.html) on Mova free.