Scalable Vector Graphics: a web standard that describes images as shapes and lines in text, so they stay sharp at any size. Plotter art and much on-chain art uses it.
The way I work with code, it's two-dimensional diagrammatic, line-based objects. We call that vector graphics. That could be in the SVG language or that could be in JavaScript. It's not specific to a certain coding language.
Rafaël Rozendaal, Rafaël Rozendaal on a Liquid Canvas