Necessary, essential for life or some process. / Elementary, simple, fundamental, merely functional. / (chemistry) Of or pertaining to a base; having a pH greater than 7.

A necessary commodity, a staple requirement. / An elementary building block, e.g. a fundamental piece of knowledge. / (military) Basic training.

Any of a family of third-generation programming languages (c.1964 on).

(attributive) Initialism of Brazil, South Africa, India and China.

Initialism of British American Security Information Council.

in a fundamental, essential or basic manner / mostly; generally; for the most part

A family of third-generation computer programming languages (c.1964 on).

plural of basic

(uncountable) The condition of being basic. / (countable, chemistry) The degree to which a substance is basic: its pH level.

plural of basicity