Word.ws English Dictionary

hexagonal number

hexagonal number noun: the number of dots in a figure made up of partially overlapping dotted regular hexagons (6k dots arranged into a regular hexagon) of perimeter 6k for k = 1 ... n which grow out of a common vertex (and two shared or partially shared sides); a.k.a. “cornered hexagonal number”; H_n+1=6Δₙ-n²+1 where Δₙ denotes the nᵗʰ triangular number.

Noun

hexagonal number (plural hexagonal numbers)

  1. The number of dots in a figure made up of partially overlapping dotted regular hexagons (6k dots arranged into a regular hexagon) of perimeter 6k for k = 1 ... n which grow out of a common vertex (and two shared or partially shared sides); a.k.a. “cornered hexagonal number”; H_n+1=6Δₙ-n²+1 where Δₙ denotes the nᵗʰ triangular number.
  2. The number of dots in a figure made up of regular dotted hexagons (of perimeter 6k for k = 1 ... n) arranged concentrically around an extra dot at their common center; a.k.a. “centered hexagonal number”; H_n+1=1+6Δₙ.

Forms of hexagonal number

pluralhexagonal numbers

Questions about hexagonal number

What does hexagonal number mean?
Hexagonal number means the number of dots in a figure made up of partially overlapping dotted regular hexagons (6k dots arranged into a regular hexagon) of perimeter 6k for k = 1 ... n which grow out of a common vertex (and two shared or partially shared sides); a.k.a. “cornered hexagonal number”; H_n+1=6Δₙ-n²+1 where Δₙ denotes the nᵗʰ triangular number.
What part of speech is hexagonal number?
Hexagonal number is a noun.
What is the plural of hexagonal number?
The plural of hexagonal number is hexagonal numbers.

Words near hexagonal number in the dictionary

  1. hexaglutamate
  2. hexaglutamates
  3. hexaglutamylated
  4. hexagon
  5. hexagonal
  6. hexagonal number
  7. hexagonal prism
  8. hexagonal prisms
  9. hexagonal water
  10. hexagonality
  11. hexagonally

Source and license

Adapted from Wiktionary: hexagonal 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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