Word.ws English Dictionary

triangular numbers

triangular numbers is the plural of triangular number.

Meaning of triangular number

Noun

triangular number (plural triangular numbers)

  1. Any integer that is the sum of n natural numbers from 1 to n.
    • Ten is a triangular number being the sum of 1, 2, 3, and 4.
    Synonyms:
    triangle number, termial

Questions about triangular numbers

What is triangular numbers the plural of?
Triangular numbers is the plural of triangular number.

Words near triangular numbers in the dictionary

  1. triangular harp
  2. triangular harps
  3. triangular hebesphenorotunda
  4. triangular matrix
  5. triangular number
  6. triangular numbers
  7. triangular prism
  8. triangular prisms
  9. triangular pyramid
  10. triangular pyramids
  11. triangularine

Source and license

Adapted from Wiktionary: triangular numbers (page history and authors); triangular 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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