3x3kokoinen
3x3kokoinen is a Finnish term that translates directly to "3x3 sized" or "of 3x3 size". It is most commonly used in relation to the Rubik's Cube, a popular 3D combination puzzle. In this context, it refers to the standard and most recognizable version of the Rubik's Cube, which has three layers on each of its three faces. Therefore, when someone refers to a "3x3kokoinen" cube, they are almost certainly talking about the classic 3x3x3 Rubik's Cube.
The term emphasizes the dimensions of the puzzle and distinguishes it from other variations, such as the