sisäreunaan

Sisäreunaan is a Finnish directional expression meaning “to the inner edge” or “onto the inner boundary.” It is formed from sisä- (“inner”) and reuna (“edge”), and the related suffix indicates movement toward that boundary in Finnish. The term is used mainly in technical, instructional, or design-oriented language to describe the position of a part relative to another component’s inner edge.

Common contexts for sisäreunaan include geometry and drafting, where features are defined in relation to the inner boundary of a shape; carpentry and cabinetmaking, where panels, moldings, or supports are aligned so their inner edge meets another part; and textiles or garment construction, where finishing or stitching runs along the inner edge of fabric pieces. In each case, the phrase helps convey precise placement and alignment with respect to an interior boundary rather than an exterior one.

Relation to related terms is straightforward: sisäreuna denotes the inner edge itself, while ulkoreuna refers to the outer edge. Reunaviiva or edge line can be used in broader design or drafting contexts to describe a line marking the boundary. In Finnish language use, sisäreunaan is a directional form used to indicate movement toward the inner edge, and it functions as part of instructions or specifications that require interior alignment or placement.

See also: sisäreuna (inner edge), ulkoreuna (outer edge), reunaviiva (edge line).