alkaline

[al-kuh-lahyn, -lin]

adjective

Chemistry.

1. of or like an alkali.

2. containing an alkali.

3. having the properties of an alkali.

4. having a pH value greater than 7.

alkaline

/ ˈælkəˌlaɪn /

adjective

1. having the properties of or containing an alkali

alkaline

1. Capable of neutralizing an acid. Bases are alkaline.

2. Relating to an alkali compound.

3. Having a pH greater than 7.

4. Having a relatively low concentration of hydrogen ions.

Word History and Origins

Origin of alkaline¹

First recorded in 1670–80; alkal(i) + -ine ¹

Example Sentences

The process uses hot water mixed with an alkaline lye solution, so it’s more environmentally friendly than standard cremation, and usually more expensive.

From Los Angeles Times

He said that the DMK alkaline washes have been so effective that his scars have softened in his arm and nearly faded on his chest.

From Los Angeles Times

The alkaline water with rich mineral composition is the only natural hot spring that flows directly into a building left uncapped in central Los Angeles.

From Los Angeles Times

The best remedy for high pH, Wallace said, is to add gypsum to your soil and avoid things that can make the soil more alkaline, such as crushed concrete.

From Los Angeles Times

The liquid is believed to be a type of home-made chilli spray with no strong acid or alkaline ingredients, police added.

From BBC

Related Words

• salty 
• soluble