A vector is a directional line defined by two points.

In digital graphics, vectors represent shapes mathematically rather than as pixels, making them fully scalable.

In digital type design, glyph outlines are built from vectors using Bézier curve technology. Each contour of a glyph is composed of connected vectors, allowing precise, editable, and scalable shapes. Type design applications rely on this vector-based system to create and manipulate glyphs.