Îndoirea

Îndoirea is a Romanian noun that denotes the act or result of bending, folding, or curving. It is derived from the verb a îndoi, to bend. The term is used in various contexts to describe a change of shape produced by applying a force.

In engineering and manufacturing, îndoirea refers to the permanent deformation of a material when it is bent. It is characterized by factors such as the bend radius and the angle of bend, and it is important in sheet metal work, plastic fabrication, and structural design. In construction, carpentry, and crafts, îndoirea describes curved profiles, arches, or folded elements created by bending or folding material like metal, wood, plastic, paper, fabric, or leather. In origami and bookbinding, folding is also described as îndoirea.

In anatomy, the term can refer to the bending of joints or limbs, for example îndoirea genunchilor (bending of the knees) or îndoirea cotului (elbow flexion). In geometry, a bend or kink in a line or path may be described as an îndoire. The concept contrasts with straightening or stretching and with deformation that is reversible versus permanent, depending on material properties and the extent of bending.

This article provides a concise overview of general uses; for precise definitions, consult field-specific glossaries.