Definition of simplex
2 : a spatial configuration of n dimensions determined by n + 1 points in a space of dimension equal to or greater than n <a triangle together with its interior determined by its three vertices is a two-dimensional simplex in the plane or any space of higher dimension>
First Known Use of simplex
Learn More about simplex
Britannica.com: Encyclopedia article about simplex
Seen and Heard
What made you want to look up simplex? Please tell us where you read or heard it (including the quote, if possible).