Definition:Tromino

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Definition

A tromino is a $3$-omino:

Trominoes.png

That is, it is a polyomino consisting of exactly $3$ unit squares.


Also known as

A tromino can also be called by the more unwieldy name triomino.


Linguistic Note

The word tromino is a back-formation from the word domino.

The prefix tr- comes from ancient Greek meaning $3$, while -omino suffix derives from the term polyomino, which is derived in turn from domino.


Sources