basebottom

Basebottom is a term used in some online and technical discussions to denote the lowest foundation or base plane of a system, object, or model. It is a portmanteau of base and bottom and functions as a flexible descriptor rather than a formal term. In geometry and CAD, basebottom may refer to the bottom base of a three-dimensional object or to the reference plane that serves as the origin for alignment and measurements. In software engineering, the term is used metaphorically to describe the foundational layer of a software stack from which other components extend, similar to a base layer or foundation.

The usage is informal and not standardized. Because it lacks formal definition in authoritative sources, its interpretation varies by community or project. Examples include statements such as aligning an object to the basebottom plane for consistent placement, or treating the basebottom as the anchor for gravity in a simulation. The term is more likely to appear in tutorials, design discussions, or hobbyist forums than in scholarly literature.

The concept underlying basebottom—the importance of a lowest foundational reference—appears across fields. See also base, bottom, foundation, base layer, reference plane, and bottom face.