Word.ws English Dictionary

tetrahedral number

tetrahedral number noun: 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.

Noun

tetrahedral number (plural tetrahedral numbers)

  1. 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.
    • The nᵗʰ tetrahedral number can be calculated with the formula #123;(n#43;1)³-(n#43;1)#92;over 6#125;.

Forms of tetrahedral number

pluraltetrahedral numbers

Questions about tetrahedral number

What does tetrahedral number mean?
Tetrahedral number means 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.
What part of speech is tetrahedral number?
Tetrahedral number is a noun.
What is the plural of tetrahedral number?
The plural of tetrahedral number is tetrahedral numbers.

Words near tetrahedral number in the dictionary

  1. tetrahalides
  2. tetrahalomethane
  3. tetrahalomethanes
  4. tetrahedra
  5. tetrahedral
  6. tetrahedral number
  7. tetrahedral numbers
  8. tetrahedralisable
  9. tetrahedrality
  10. tetrahedralizable
  11. tetrahedralization

Source and license

Adapted from Wiktionary: tetrahedral number (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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