nedirecional

Nedirecional is a term used in Portuguese-language contexts to describe systems, models, or phenomena that do not rely on a fixed direction or orientation. The expression is a neologism formed from the negation element "não" and the adjective "direcional" (directional), indicating that the object is direction-agnostic or isotropic.

In engineering and data analysis, nedirecional design suggests invariance to rotation or orientation; for example, non-directional sensors or algorithms that produce the same output regardless of input orientation. In computer graphics, a nedirecional shading model would respond identically under rotations. In physics and materials science, it can refer to properties that are isotropic, lacking directional dependence.

Usage and scope: The term is not as widely standardized as "indirecional" or "isotrópico" and is used mainly in informal discourse, design documents, or niche communities. It is often contrasted with directional, anisotropic, or orientation-dependent methods. When precise meaning is important, alternatives such as isotrópico, invariável à orientação, ou não direcional are used in formal writing.

Relationship to related concepts: Invariance under rotation, isotropy, omnidirectionality, and isotropic models share overlapping ideas with nedirecional. The term emphasizes the absence of a fixed directional bias rather than the mathematical formalism of isotropy.