Meanings
plural pentominoes
- geometryA polyomino consisting of five square units. When packing pentominoes into three-dimensional shapes, the square units commonly are expanded into cubes instead of being flattened.
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!
2011 October 15, Maki Kaji, The Big Book of Visual Sudoku, Workman Publishing Company, page 118Synonyms: 5-omino
Synonyms & antonyms
nounA polyomino consisting of five square units. When packing pentominoes into three-dimensional shapes, the square units commonly are expanded into cubes instead of being flattened.
Origin
Rhymes & wordplay
Rhymes with pentomino
All rhymes →Cite this entry
pentomino. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/pentomino
“pentomino.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/pentomino. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “pentomino,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/pentomino.
Source: pentomino on Wiktionary, CC BY-SA 4.0.