Achse

Achse is a German noun meaning axis or axle. It denotes a line around which something rotates or a rod that connects and supports rotating parts, depending on the context.

In mechanical engineering and vehicle technology, an Achse refers to a rotating shaft that transmits torque and supports wheels, gears, or pulleys. In everyday usage, it is commonly the axle of a vehicle, the component that houses wheels and enables rotation.

In geometry and mathematics, an Achse is a straight line used as a reference for measurements, rotations, or symmetry. Examples include the coordinate axes (x-axis, y-axis, z-axis) and the axis of symmetry of a shape.

In astronomy and earth science, the Earth's axis is the imaginary line through its center around which the planet rotates; the axial tilt relative to the orbital plane influences seasonal patterns.

In biology and botany, the term can describe the main stem or central axis of a plant, supporting leaves and flowers.

In data visualization and other disciplines, axes define reference lines for graphs and spatial coordinates.

The plural form is Achsen. In English contexts, Achse translates as axis or axle depending on whether the reference is a line or a shaft; the distinction is usually evident from context and related terms.