pentomino

English

Etymology

From pent- +‎ -omino.

Pronunciation

• (Received Pronunciation) IPA^(key): /pɛnˈtɒmɪnəʊ/
• (General American) IPA^(key): /pɛnˈtɑməˌnoʊ/
• Rhymes: -ɒmɪnəʊ, -ɒmənəʊ

Noun

pentomino (plural pentominoes)

Examples of the two-dimensional tessellation of the 12 possible distinct pentomino shapes into rectangles of the same area, but different side lengths.

Animation showing the packing of the 12 possible distinct three-dimensional pentomino shapes into a cuboid measuring 2x3x10 units.

1. (geometry) A polyomino made up of five square units. When packing pentominoes into three-dimensional shapes, the square units commonly are expanded into cubes instead of being flattened.
   • 2011 October 15, Maki Kaji, The Big Book of Visual Sudoku‎^[1], Workman Publishing Company, page 118:

     If a domino had four squares on its surface, it would be a tetromino. With five squares, it would be a pentomino—nine, a nonomino, eleven, an unwieldy undecomino!

Synonyms

• 5-omino

Derived terms

• R-pentomino

Related terms

n squares	name
1 squares	monomino
2 squares	domino
3 squares	tromino or triomino
4 squares	tetromino
5 squares	pentomino
6 squares	hexomino
7 squares	heptomino
8 squares	octomino
9 squares	nonomino or enneomino
10 squares	decomino
11 squares	undecomino
12 squares	dodecomino
n squares	n-omino
unspecified number squares	polyomino

Further reading

• Category:Pentominoes on Wikimedia Commons.Wikimedia Commons
• All about pentominoes