What term describes an engine with cylinders arranged in two rows?

The term used to describe an engine with cylinders arranged in two rows is "V." In a V-engine design, the cylinders are set in a configuration that forms a "V" shape when viewed from the front. This arrangement allows for a more compact engine design, making it suitable for a wider variety of applications, including cars and motorcycles. The V configuration can also help reduce the overall height of the engine, which can be beneficial in designing vehicles.

Different types of engine configurations exist, but the V shape is particularly popular due to its balance of size, power generation, and smooth operation. This configuration typically results in better weight distribution and can allow for more cylinders to be incorporated compared to inline designs, which may be longer and provide less power in a compact space.

In contrast, the inline configuration has all its cylinders arranged in a single row, horizontal engines have cylinders arranged parallel to the ground, and radial engines feature cylinders arranged in a circular pattern around a central crankshaft. Each of these configurations serves specific purposes and offers unique advantages, but for two rows specifically, the V configuration is the most appropriate term.