from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A polyform made by joining one or more squares edge to edge in various arrangements.
poly- + (d)omino, as if the d were for di-, two, a domino being made up of two squares (Wiktionary)
Most puzzle designs also require that all white cells be orthogonally contiguous (that is, connected in one mass through shared sides, to form a single polyomino).
KDE UserBase - Recent changes [en]
A classic book on polyomino puzzles of all types is Solomon W. Golomb's