1forming an essential foundation or starting point; fundamental:certain basic rules must be obeyedthe laying down of arms is basic to the agreement
offering or constituting the minimum required without elaboration or luxury:the food was good, if a bit basic
common to or required by everyone; primary and ineradicable or inalienable:basic human rights
2 Chemistry having the properties of a base, or containing a base; having a pH above 7:these salts yield basic solutions comparable in strength with the mineral alkalisOften contrasted with acidic and alkaline.
Geology (of rock, especially lava) relatively poor in silica:a coarse-grained, basic, plutonic rock
Metallurgy relating to or denoting steel-making processes involving lime-rich refractories and slags.
the essential facts or principles of a subject or skill:I learnt the basics of programming on a courseteachers are going back to basics to encourage pupils to learn English
essential food and other supplies:people are facing a shortage of basics like flour