Definition:Pentomino
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Definition
A pentomino is a $5$-omino:
That is, it is a polyomino consisting of exactly $5$ unit squares.
Linguistic Note
The word pentomino is a back-formation from the word domino.
The prefix pent- comes from ancient Greek meaning $5$, while -omino suffix derives from the term polyomino, which is derived in turn from domino.
Sources
- Weisstein, Eric W. "Pentomino." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Pentomino.html