Don’t know whether this has been broached before, so here goes…
Today I was having my regular morning coffee and chit-chat with cabdude and we were talking about the Star Wars series of movies and other series of movies generally.
If two movies are made, it called be called a double, a doublet or a duo.
Three could be called a trilogy, a triplet or a trio.
Four could be called a quadrilogy, a quadruplet or a quad.
Five could be called a pentology, pentuplet, pentangle or pentagon.
Would six be a sexology or a sextuplet?
Actually, I don’t think that “quadilogy” is even a word. I know that the four movie DVD set for the Alien movies is called the Alien Quadrilogy, but it’s not a real word. If anything, it should’ve been called the Alien Tetralogy.
So four is tetralogy. Five is pentalogy. If you insist on more, I’d guess six is hexalogy, seven is heptalogy, etc. But this is really kind of moot after 3 or 4 since after 3, most people just call a series a series.