Yksitasoinen

Yksitasoinen is a Finnish adjective derived from the noun tasa (level) and the prefix yksi (one), literally meaning “one‑level” or “single‑layered.” The term is used in several domains to describe entities that possess only a single structural level or stratum.

In architecture and civil engineering, yksitasoinen refers to buildings or floors that have only one story, such as a yksitasoinen talo (single‑storey house). The expression is common in Finnish building codes and real‑estate listings and is preferred over the archaic term yksinkertainen as a neutral descriptor.

In computer science, yksitasoinen is sometimes used to describe data structures or models that contain only one layer. For example, a yksitasoinen neural network has a single hidden layer, and a yksitasoinen payment system operates without intermediary layers. The term helps differentiate between flat architectures and multi‑layered ones in software design documentation.

Biology occasionally employs the root concept in taxonomy, where a genus that contains only one species is called monotypic. In Finnish scientific literature the phrase yksimäinen tietyssä tasossa (“single‑species at a certain level”) may be used to translate this idea, though the term yksitasoinen is more general and not restricted to biological classification.

The term is neutral and descriptive, lacking evaluative nuance. It is related to Finnish words such as monolokeroinen (monolayered) and kaksitasoinen (two‑level). Yksitasoinen appears in legal texts, architectural blueprints, software specifications, and scientific publications wherever a single‑layer structure needs to be specified.