supistukseen

Supistus is a Finnish noun that refers to the act of contracting, squeezing, or tightening. It can describe the state or action of something becoming smaller or more compact, and it is closely related to the verb supistaa, meaning to squeeze, compress, or contract.

In medical and physiological usage, supistus commonly refers to muscle contraction and to the constriction of hollow organs or vessels. For example, the contraction of skeletal muscles is described as lihasten supistuminen, while the narrowing of a blood vessel or airway is referred to as verisuonen tai hengitysteiden supistuminen. A single muscular contraction can be called a supistus, and in obstetric contexts, labor contractions are often discussed as synnytyssupistukset. The term can also be used more generally for any process of tightening or reducing an opening, lumen, or space.

Supistus is part of a broader family of related forms, including the noun supistuminen (the process of contracting or tightening) and various plural or compound expressions such as supistukset. The illative form supistukseen is the case used to express entering into a state or condition of contraction in Finnish grammar, and it appears in contexts describing movement into or occurrence of a contraction.

In everyday Finnish, supistus conveys both mechanical squeezing and physiological contraction, ranging from muscular activity to vascular or organ constriction. It is distinct from related terms like kouristus (spasm) and from verbs that emphasize relaxation or expansion.