teragon

noun.

teragon. (plural teragons).

1. an infinite self-referencing fractal.
2. a polygon that has infinite fractal sides, the most famous example being the Koch snowflake, one of the earliest fractals, described by Helge von Koch in his paper On a Continuous Curve Without Tangents, Constructible from Elementary Geometry (1904).
3. term coined by Benoît Mandelbrot from the words τέρας (teras: wonder, marvel) + γωνία (gōnía: corner), in his book The Fractal Geometry of Nature (1982).
4. an AI research and engineering lab from London, UK (2026).