Standard Lemma guide

triomino

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /tɹaɪˈɒmɪnəʊ/
  • General-American: trī-ŏmʹĭ-nō'
  • General-American: /tɹaɪˈɑməˌnoʊ/
  • rhymes with -ɒmɪnəʊ
  • rhymes with -ɒmənəʊ

1

noun

Meaning 1

A triangular tile, used in triominoes, a variant of the game of dominoes.

Definition source: English Wiktionary via Wiktextract

Topics: games

Examples

  • Note: as the game plays, polyiamonds are created.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Alternative form of tromino (“a polyomino consisting of three squares connected edge to edge”)

Definition source: English Wiktionary via Wiktextract

Usage: alt-of, alternative

Topics: geometry, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From tri- + (d)omino.

Etymology tree Proto-Indo-European *tréyes Proto-Indo-European *tri- Proto-Italic *tri- Latin tri-der. English tri- English -omino English triomino From tri- + -omino.