tetrahedral number (English, noun)
expansion: tetrahedral number (plural tetrahedral numbers)
Senses:
topics: mathematics
sciences
glosses: A number which results from the summation of consecutive triangular numbers, starting from 1. If the triangular numbers in such a summation are depicted as horizontal triangular arrays of units then these arrays can be stacked vertically to yield a tetrahedral array.
Forms:
form: tetrahedral numbers
tags: plural