Question

what is meant by base​

Answer 1

Any substance which have hydroxide ion concentration and turns the colour of red litmus to blue is called base...

Answer 2

In chemistry, a base is a chemical species that donates electrons, accepts protons, or releases hydroxide (OH-) ions in aqueous solution. Bases display certain characteristic properties that can be used to help identify them. They tend to be slippery to the touch (e.g., soap), can taste bitter, react with acids to form salts, and catalyze certain reactions.

hope it will help you....