ph

word

/ˈpiˈeɪtʃ/
pee-AYCH
/ˈpiˈeɪtʃ/
pee-AYCH

Definition

pH is a scale used in science to measure how acidic or basic a liquid is. It usually ranges from 0 (very acidic) to 14 (very basic or alkaline), with 7 being neutral.

Usage & Nuances

'pH' is always written with lowercase 'p' and uppercase 'H'. It is used mostly in scientific, technical, and educational contexts, especially in chemistry and biology. Do not use 'ph' in casual speech as a word but always as the notation 'pH'.

Example Sentences

If the soil's pH is too low, your plants might not grow well.

natural

Some shampoos are made to balance your hair's pH.

natural

Lemons have a low pH because they are acidic.

basic

You can test the pool's pH with special strips.

natural

The pH of water is usually 7.

basic

Soap usually has a high pH.

basic