Pentomino

//pɛnˈtɒmɪnəʊ// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    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.

    "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

All synonyms
5 omino5-omino

Example

More examples

"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!"

Etymology

From pent- + -omino.

Related phrases

R-pentomino

More for "pentomino"

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.