tukipinnalle

Tukipinnalle is a Finnish term used primarily in technical and instructional language to indicate that something should be placed onto a supporting surface. It functions as a directional expression, describing the position or movement of an object toward a surface that provides stability or support.

Etymology and meaning: the word combines tuki, meaning support or backing, with pinta, meaning surface. The form pinnalle uses the allative suffix -lle to express direction toward the surface, roughly translating to “onto the support surface.” In contrast, tukipinnalla would denote placement on the surface (in/on the surface) rather than movement toward it.

Usage and examples: tukipinnalle is commonly found in manuals, assembly instructions, and diagrams. It specifies how components should be oriented or positioned relative to a stabilizing plane. Examples include: “Aseta osa tukipinnalle” (Place the part onto the support surface) and “Kiinnitä tukipinnalle ennen kytkemistä” (Fasten onto the support surface before connecting). The form helps distinguish target placement from other surfaces involved in a procedure.

Related terms: tukipinta (the support surface), pinta (surface), tuki (support). The concept is closely related to other surface-contact terms such as kontaktipinta (contact surface) and alusta (base or foundation).

See also: Finnish technical vocabulary pertaining to surfaces and supports, mechanical engineering terminology, and assembly instructions.