Middenas

Middenas is a Dutch term that translates roughly to “central axis” or “midline.” It refers to a straight line that runs through the center of an object or system and serves as a reference for alignment, symmetry, or rotation. The exact meaning of middenas can vary by domain, but it generally denotes a principal or central line around which other features are organized.

In engineering and machinery, the middenas is often the central shaft or axle of rotating parts, such as wheels, rotors, or turbines. It provides a reference for mounting, balancing, and ensuring proper rotational behavior. In geometry and design, the term is used to describe an axis of symmetry or a principal axis used to define coordinates and relate features to the center of an object.

In architecture and urban planning, the middenas can describe the central vertical axis of a floor plan or city layout, around which spaces or streets are organized and mirrored. In metrology and manufacturing, a middenas may serve as a datum or reference line for measurements and tolerancing.

Etymology derives from midden (middle) and as (axis). Because terminology can differ between disciplines, the precise definition of middenas should be confirmed within the relevant field. Related terms include axis, axis of symmetry, centreline, midline, and axle.