Tetromino

//tɛˈtɹɒmɪnəʊ// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A polyomino made up of four squares connected edge to edge.

    "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
4 omino4-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 tetra- + -omino.

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