tjugosidor
Tjugosidor is an obscure term with no widely recognized definition in English-language reference works. The word does not appear as a standard term in major dictionaries or encyclopedias, and its meaning is not fixed across sources.
Most apparent etymology points to a Scandinavian origin: tjugo means twenty, and sidor means sides or pages.
Because there is no canonical meaning, the term is typically encountered only as a neologism or in
Scholarly treatment of tjugosidor is limited; it should be considered a lexical curiosity or a placeholder
Related ideas include the icosahedron (a twenty-faced polyhedron) and twenty-sided dice used in tabletop role-playing games,