Meaning of BASIC in English

BASIC

adj relating to a base; performing the office of a base in a salt.

2. basic ·adj said of crystalline rocks which contain a relatively low percentage of silica, as basalt.

3. basic ·adj apparently alkaline, as certain normal salts which exhibit alkaline reactions with test paper.

4. basic ·adj having the base in excess, or the amount of the base atomically greater than that of the acid, or exceeding in proportion that of the related neutral salt.

Webster English vocab.      Английский словарь Webster.