Concrete art is a form of abstract art that has no connection to observed reality or any symbolic meaning.
The term "Concrete art" was coined by artist Theo van Doesburg in his 1930 Manifesto of Concrete Art, which he published in the first issue of the magazine Art Concret. He argued that there's nothing more concrete or real than a line, a colour, or a flat area of colour (plane).
Swiss artist Max Bill championed concrete art and organised the first international exhibition in Basel in 1944. According to Bill, the goal of concrete art is to visually and tangibly represent abstract ideas by creating things that didn't exist before.