tetromino

T1E1T1R1O1M3I1N1O1
UK/tɛˈtɹɒmɪnəʊ/US/tɛˈtɹɑməˌnoʊ/

noun

A polyomino consisting of four squares connected edge-to-edge.

Similar
4-omino
OriginEnglish tetra- ← Ancient Greek τετρᾰ- (tetră-) ← Proto-Hellenic *kʷétwores →
Scrabble 11
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Meanings

nountetromino (plural tetrominoes)

plural tetrominoes

  1. geometryA polyomino consisting 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!

    2011 October 15, Maki Kaji, The Big Book of Visual Sudoku, Workman Publishing Company, page 118

    Synonyms: 4-omino

Synonyms & antonyms

nounA polyomino consisting of four squares connected edge-to-edge.

Similar
4-omino
Also see
4-omino

Origin

  1. Proto-Indo-European*kʷetwóres
  2. Proto-Hellenic*kʷétwores
  3. Ancient Greekτέσσᾰρες (téssăres)
  4. Ancient Greekτετρᾰ- (tetră-)
  5. Englishtetra-
  6. Englishtetromino

From tetra- + -omino.

Full word history & related roots →

Translations

Polish tetromino
  • tetrominopolyomino made up of four squares
Spanish tetrominó
  • tetrominópolyomino made up of four squares

Rhymes & wordplay

Rhymes with tetromino

dominoheptominohexominomonominononominooctomino-ominopentominopolyominotriominotromino
All rhymes →
Cite this entry
APA

tetromino. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/tetromino

MLA

“tetromino.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tetromino. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “tetromino,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/tetromino.

Source: tetromino on Wiktionary, CC BY-SA 4.0.