The definition of alkaline is any substance having a base pH higher than 7.
Certain types of food (such as broccoli) are examples of something alkaline because their pH is higher than 7.
- of, like, or having the properties of an alkali
- having a pH more than 7
- containing an alkali
- Of, relating to, or containing an alkali.
- a. Having a pH greater than 7.b. Having a relatively low concentration of hydrogen ions.
- Of or relating to a common disposable battery made of zinc and manganese dioxide.
- An alkaline battery.
(comparative more alkaline, superlative most alkaline)